Military Health System Data Repository Research Articles

BMI changes among U.S. Navy and Marine Corps active-duty service members during the COVID-19 pandemic, 2019–2021

BackgroundThe COVID-19 pandemic disrupted the daily life and routines of Americans across the United States (U.S.), including those of our active-duty service members (ADSMs). Limited movement orders enacted during this time to promote social distancing prohibited access to fitness and dining facilities for ADSMs. This study aims to expand on previous work identifying changes in body mass index (BMI) among U.S. Army service members by identifying changes in body mass index (BMI) among active-duty service members from both the Navy and Marine Corps during the same time period.MethodsWe conducted a retrospective cohort study of active-duty service members from the Navy and Marine Corps using data from the Military Health System Data Repository. BMI was calculated and categorized according to CDC guidelines both before (February 2019 - January 2020) and during the pandemic (September 2020 - June 2021). Women who were pregnant or delivered during and one year prior to the study periods were excluded. Statistical analyses included paired t-tests evaluating mean BMI, percent change, and the Stuart-Maxwell test for marginal homogeneity.ResultsWe identified 98,330 active-duty Sailors and 55,298 active-duty Marines for inclusion in this study. During the pandemic period the percentage of Sailors with Underweight decreased by 11%, Healthy weight decreased by 11.1%, Overweight increased by 2.1%, and the percentage of Sailors with Obesity increased by 16.5%. During this same time period, Marines with Underweight decreased by 1%, Healthy weight decreased by 16%, Overweight increased by 3.0%, and Marines with Obesity increased by 51%. The largest increases in service members with overweight and obesity observed among both cohorts were among female service members, service members under age 20, and service members with a Junior Enlisted rank.ConclusionsSignificant increases in obesity were observed amongst active-duty United States Navy and Marine Corps service members during DoD pandemic mitigation efforts. Increased rates of obesity likely effected fitness and force readiness. Future interventions should be targeted at younger, Junior-Enlisted Marines and Sailors to promote healthy lifestyles and provide education on nutrition, appropriate exercise, sleep hygiene, and stress management.

Time to Gender-Affirming Hormone Therapy Among US Military–Affiliated Adolescents and Young Adults

Use of exogenous sex steroid hormones, when indicated, may improve outcomes in adolescents and young adults with gender incongruence. Little is known about factors associated with the time from diagnosis of gender dysphoria to initiation of gender-affirming hormone therapy. Identification of inequities in time to treatment may have clinical, policy, and research implications. To evaluate factors associated with time to initiation of gender-affirming hormone therapy after a diagnosis of gender dysphoria in adolescents and young adults receiving care within the US Military Health System. This retrospective cohort study used TRICARE Prime billing and pharmacy data contained in the Military Health System Data Repository. Patients aged 14 to 22 years, excluding service members and their spouses, who received a diagnosis of gender dysphoria between September 1, 2016, and December 31, 2021, were included. The data were analyzed between August 30 and October 12, 2023. Included patient characteristics were race and ethnicity, age group, first sex assigned in the medical record, and TRICARE Prime sponsor military rank and service at the time of diagnosis. Health care and contextual characteristics included the year of diagnosis and the primary system in which the patient received health care. The primary outcome was the time between initial diagnosis of gender dysphoria to the first prescription for gender-affirming hormone medication within a 2-year period. A Poisson generalized additive model was used to evaluate this primary outcome. Adjusted probability estimates were calculated per specified reference categories. Of the 3066 patients included (median [IQR] age, 17 [15-19] years; 2259 with first assigned gender marker of female [74%]), an unadjusted survival model accounting for censoring indicated that 37% (95% CI, 35%-39%) initiated therapy by 2 years. Age-adjusted curves indicated that the proportion initiating therapy by 2 years increased by age category (aged 14-16 years, 25%; aged 17-18 years, 39%; aged 19-22 years, 55%). Incidence rate ratios (IRRs) and 2-year adjusted probabilities indicated that longer times to hormone initiation were experienced by adolescents aged 14 to 16 years (IRR, 0.36; 95% CI, 0.30-0.44) and 17 to 18 years (IRR, 0.66; 95% CI, 0.54-0.79) compared with young adults aged 19 to 22 years and Black compared with White adolescents (IRR, 0.73; 95% CI, 0.54-0.99). Senior officer compared with junior enlisted insurance sponsor rank (IRR, 1.93; 95% CI, 1.04-3.55) and civilian compared with military health care setting (IRR, 1.21; 95% CI, 1.02-1.43) was associated with shorter time to hormone initiation. In this cohort study, most adolescents and young adults with a diagnosis of gender dysphoria receiving health care through the US military did not initiate exogenous sex steroid hormone therapy within 2 years of diagnosis. Inequities in time to treatment indicate the need to identify and reduce barriers to care.

Enhancing the Management of Deployment-Limiting Medical Conditions in the U.S. Department of Navy Leveraging Electronic Health Records and Predictive Analytics Methods.

Deployment-limiting medical conditions (DLMCs) such as debilitating injuries and conditions may interfere with the ability of military service members (SMs) to deploy. SMs in the United States (U.S.) Department of the Navy (DoN) with DLMCs who are not deployable should be placed in the medically restricted status of limited duty (LIMDU) or referred to the Physical Evaluation Board (PEB) for Service retention determination. It is critical to identify SMs correctly and promptly with DLMCs and predict their return-to-duty (RTD) to ensure the combat readiness of the U.S. Military. In this study, an algorithmic approach was developed to identify DoN SMs with previously unidentified DLMCs and predict whether SMs on LIMDU will be able to RTD. Five years of historical data (2016-2022) were obtained from inpatient and outpatient datasets across direct and purchased care from the Military Health System (MHS) Data Repository (MDR). Key fields included International Classification of Diseases diagnosis and procedure codes, Current Procedure Terminology codes, prescription medications, and demographics information such as age, rank, gender, and service. The data consisted of 44,580,668 medical encounters across 1,065,224 SMs. To identify SMs with unidentified DLMCs, we developed an ensemble model combining outputs from multiple machine learning (ML) algorithms. When the ML ensemble model predicted a SM to have high risk scores, despite appearing healthy on administrative reports, their case was reviewed by expert clinicians to investigate for previously unidentified DLMCs; and such feedback served to validate the developed algorithms. In addition, leveraging 1,735,422 encounters (60,433 SMs) from LIMDU periods, we developed four separate ML models to estimate RTD probabilities for SMs after each medical encounter and predict the final LIMDU outcome. The ensemble model had 0.91 area under the receiver operating characteristic curve (AUROC). Out of 236 (round one) and 314 (round two) SMs reviewed by clinicians, 127 (54%) and 208 (66%) SMs were identified with a previously unidentified or undocumented DLMC, respectively. Regarding predicting RTD for SMs placed on LIMDU, the best performing ML model achieved 0.76 AUROC, 68% sensitivity, and 71% specificity. Our research highlighted potential benefits of using predictive analytics in a medical assessment to identify SMs with DLMCs and to predict RTD outcomes once placed on LIMDU. This capability is being deployed for real-time clinical decision support to enhance health care provider's deployability assessment capability, improve accuracy of the DLMC population, and enhance combat readiness of the U.S Military.

Poster 130: Incidence and Treatment Characteristics of Coracoclavicular Ligament Injuries with Associated Lateral Clavicle Fractures in a Military Population

Objectives: To identify the demographics and characteristics of lateral clavicle fractures treated with coracoclavicular ligament repair or reconstruction, as well as to the subsequent postoperative complications. Methods: The United States Military Health System Data Repository was queried for patients with a Current Procedural Terminology (CPT) code for coracoclavicular ligament reconstruction between October 2013 and March 2020. Radiographs were evaluated for the presence of a lateral clavicle fracture at the time of initial injury and classified based on the modified Neer classification. The electronic health records to include operative reports and clinical notes were then reviewed for patient demographics, operative technique, and clinical course. Results: A total of 965 patients underwent coracoclavicular ligament repair or reconstruction between October 2013 and March 2020. Forty patients (4.6%) were identified with concomitant lateral clavicle fractures. The mean age of 29.575 years (SD 10.1) of which 85% male and 80% were active duty. Based on the Neer classification, there were three type I, 18 type IIB, 12 type III, and seven type V. Twenty-two of these injuries were addressed acutely (55%), while 18 were managed chronically (45%). Open reduction internal fixation of the distal clavicle was performed in 16 of the 40 patients (40%). An equivalent distribution of concomitant coracoclavicular ligament repair versus reconstruction was performed amongst the forty total patients. Postoperatively, two patients went on to nonunion and seven patients had loss of coracoclavicular reduction. Five patients returned to the operating room for removal of symptomatic hardware (3), revision (1), and irrigation and debridement (1). At the conclusion of their fracture care, five (12.5%) of patients necessitated medical separation from the military. Conclusions: A small subset of coracoclavicular reconstructions performed in the military occur for a concomitant lateral clavicle fracture. The majority of military patients who underwent coracoclavicular ligament repair or reconstruction in the setting of a lateral clavicle regained full, pain-free range of motion. Although malunion and nonunion are known complications of this injury pattern, only two patients went on to develop these complications. However, postoperative complications were common, occurring in 25% of patients. At the conclusion of their fracture care, five (12.5%) of patients necessitated medical separation from the military.

What is the Case Volume of Orthopaedic Trauma Surgeons in the Military Health System? An Assessment of Wartime Readiness and Skills Sustainment.

Complex, high-energy extremity trauma secondary to explosive mechanisms has been increasingly common in modern warfare, accounting for a majority of combat wounds throughout the conflicts in Iraq and Afghanistan. Fellowship-trained orthopaedic trauma surgeons treated many of these complex injuries; however, as the number of casualties continue to decrease during a period of relative peace, a growing concern over maintaining military trauma readiness exists. The Military Health System Data Repository was queried for all Common Procedural Terminology (CPT) codes associated with 18 fellowship-trained orthopaedic trauma surgeons from 2013 to 2019. The codes were further analyzed and categorized based on common trauma subspecialty procedures such as fracture fixation of the pelvic ring, acetabulum, upper and lower extremity, peri-articular, and nonunion/malunion surgery. We used descriptive statistics to quantify both the average number of cases per surgeon per year in each of the subcategories and case volume among Military Treatment Facilities (MTFs) during the study period. We identified 7,769 CPT codes for surgical procedures throughout the study period. The most common surgical procedures performed were: removal of implant (n = 836, 11%), knee arthroscopy (n = 507, 7%), and debridement of devitalized tissue (n = 345, 4%). The total trauma subspecialty procedural codes and average cases per surgeon per year were as follows: pelvic ring (n = 54, <1 case/year), acetabulum (n = 90, 1 case/year), upper extremity (n = 1,314, 15 cases/year), lower extremity (n = 2,286, 25 cases/year), peri-articular (n = 675, 8 cases/year), and nonunion/malunion (n = 288, 3 cases/year). San Antonio Military Medical Center (SAMMC) accounted for the most fracture-related CPT codes overall (35%), while all other MTFs contributed approximately 10% or less of all fracture-related codes. These results highlight the lack of orthopaedic trauma volume at other MTFs outside of SAMMC, raising concern for maintaining military readiness during an inter-war period of relative peace. The DoD continues to make concerted efforts to maintain readiness through civilian partnerships and subsequently increase surgical case volume for military trauma surgeons. Future efforts should include an in-depth analysis of caseloads of military trauma surgeons providing care at both MTFs and civilian institutions to optimize preparedness in future conflicts.

Assessment of Surgical Complications Strengthen the Relationship Between Spine Surgery Procedure Intensity and Chronic Opioid Use After Surgery.

Prospective cohort using routinely collected health data. To compare opioid use based on surgery intensity (low or high). Many factors influence an individual's experience of pain. The extent to which postsurgical opioid use is influenced by the severity of spine surgery is unknown. The participants were individuals undergoing spine surgery in a large military hospital. Procedures were categorized as low intensity (eg, microdiscectomy and laminectomy) and high intensity (eg, fusion and arthroplasty). The Surgical Scheduling System and Military Health System Data Repository were queried for healthcare utilization the 1 year before and after surgery. We compared opioid use after surgery between groups, adjusting for prior opioid use and surgical complications. A total of 342 individuals met the inclusion criteria, with mean age 45.4 years (SD 10.9), and 33.0% were women. Of these, 221 (64.6%) underwent a low-intensity procedure and 121 (35.4%) underwent a high-intensity procedure. Mean postoperative opioid prescription fills were greater in the high- versus low-intensity group (9.0 vs. 5.7; P <0.001), as were the mean total days' supply (158.9 vs. 81.8; P <0.001). Median morphine milligram equivalents (MMEs) were not significantly different (40.2 vs. 42.7; P =0.287). Of the cohort, 26.3% were chronic opioid users after surgery. Adjusted rates of long-term opioid use were not different between groups when only accounting for prior opioid use but significantly higher for the high-intensity group when adjusting for surgical complications (OR=2.08; 95% CI 1.09-3.97). Of the entire cohort, 52.5% was still filling opioid prescriptions after 6 months. Higher-intensity procedures were associated with greater postoperative opioid use than lower-intensity procedures. Chronic opioid use was not significantly different between surgical intensity groups when considering only prior opioid use. Chronic opioid use was significantly higher among higher intensity procedures when accounting for surgical complications. The presence of surgical complications is a stronger predictor of postsurgical long-term opioid use in high-intensity surgeries than history of opioid use alone. Level III.

Massage Therapy Utilization in the Military Health System.

Massage therapy is an evidence-based approach for pain management. Information regarding its utilization in the Military Health System (MHS) is lacking. The goal of this study is to evaluate massage therapy utilization patterns across the MHS to include who receives (patient characteristics and diagnoses) and provides (e.g., massage therapists) massage therapy and where (e.g., clinic type). Medical record data of adult TRICARE Prime enrollees receiving outpatient massage therapy (Current Procedural Terminology codes: 97124 and 97140) from June 1, 2021, to May 31, 2023, were extracted from the MHS Data Repository. After identifying the index massage therapy visit, records for 6 months pre- and post-index were included. Descriptive statistics described massage therapy utilization patterns overall. Bivariate analysis compared patients who received massage therapy from massage therapists versus nonmassage therapist clinicians. Of patients who received massage therapy (n = 179,215), the median number of visits was 2 (interquartile range 1 to 4), the median age was 32 years (interquartile range 25 to 40), they were mostly assigned male (72%), White (53%), Senior Enlisted (51%), with a musculoskeletal diagnosis (90%), and recent non-steroidal anti-inflammatory drug (NSAID) prescription (58%). Massage therapy was primarily delivered by physical therapists (49%) in physical therapy clinics (74%). Massage therapists provided 0.2% of massage therapy. Patients who received massage therapy from massage therapists versus nonmassage therapists significantly varied across several patient and care characteristics. While massage therapy codes are documented frequently, massage therapists do not commonly provide massage therapy relative to nonmassage therapist providers. Access to massage therapists may be stymied by both lack of massage therapists and need for tertiary pain management referrals to access massage therapist-delivered care. Future research will leverage a health equity framework to (1) evaluate accessibility to massage therapy provided by massage therapists and (2) evaluate real-world evidence of massage therapy effectiveness.

Incidence and prevalence of eating disorders among U.S. military service members, 2016-2021.

Despite unique experiences that may increase eating disorder risk, U.S. military service members are an understudied population. The current study examined incidence and prevalence of eating disorder diagnoses in U.S. military personnel. This retrospective cohort study utilized Military Health System Data Repository (MDR) data on eating disorder diagnoses (2016-2021). Active duty, Reserve, and National Guard U.S. military service members who received care via TRICARE Prime insurance were identified by ICD-10 eating disorder diagnostic codes. During the 6-year surveillance period, 5189 Service members received incident eating disorders diagnoses, with a crude overall incidence rate of 6.2 cases per 10,000 person-years. The most common diagnosis was other/unspecified specified eating disorders, followed by binge-eating disorder, bulimia nervosa, and anorexia nervosa. There was an 18.5% overall rise in total incident cases across the surveillance period, but this trend was not statistically significant (p = 0.09). Point prevalence significantly increased across the 6-year timeframe for total eating disorders (p < 0.001). Period prevalence for 6-year surveillance period was 0.244% for total eating disorders, 0.149% for other/unspecified eating disorder, 0.043% for bulimia nervosa, 0.038% for binge-eating disorder, and 0.013% for anorexia nervosa. Overall crude incidence estimates for total eating disorders were higher than reported in prior research that included only active duty Service members and required an eating disorder diagnosis code in the first or second diagnostic position of the medical record. Comprehensive and confidential studies are needed to more thoroughly characterize the nature and scope of eating disorder symptomatology within U.S. military personnel. U.S. military service members are a vulnerable population with regard to eating disorder symptoms. Previously reported incidence and prevalence estimates using data from the Military Health System may have been underestimated due to overly stringent case definitions. Given personal and occupational barriers (e.g., career consequences), confidential studies of military personnel may provide more complete data on the scope of eating disorders to inform screening and clinical practice guidelines for military populations.

Estimates of unintended pregnancy among US active-duty service women and the impact on Women Peace and Security objectives as measured by potential readiness days lost

IntroductionThe prevalence of unintended pregnancy (UIP) in the United States is high among active-duty service women (ADSW).ObjectiveTo estimate the number of UIPs and the impact these pregnancies have on the...

Common Data Elements and Databases Essential for the Study of Musculoskeletal Injuries in Military Personnel.

Injuries are the leading cause of medical encounters with over 2 million medical encounters for musculoskeletal (MSK) conditions and over 700,000 acute injuries per year. Musculoskeletal injuries (MSKIs) are by far the leading health and readiness problem of the U.S. Military. The Proceedings of the International Collaborative Effort on Injury Statistics published a list of 12 data elements deemed necessary for injury prevention in the civilian population; however, there are no standardized list of common data elements (CDEs) across the DoD specifically designed to study MSKIs in the Military Health System (MHS). This study aims to address this gap in knowledge by defining CDEs across the DoD for MSKIs, establishing a CDE dictionary, and compiling other necessary information to quantify MSKI disease burden in the MHS. Between November 2022 and March 2023, we conducted an environmental scan of current MSKI data metrics across the DoD. We used snowball sampling with active engagement of groups housing datasets that contained MSKI data elements to determine CDEs as well as information on readiness databases across the DoD containing up-to-date personnel information on disease, hospitalizations, limited duty days (LDDs), and deployability status for all military personnel, as well as MSKI-specific measures from the MHS Dashboard which tracks key performance measures. We identified 8 unique databases: 5 containing demographic and diagnostic information (Defense Medical Surveillance System, Medical Assessment and Readiness Systems, Military Health System Data Repository, Person-Data Environment, and Soldier Performance, Health, and Readiness Database); and 3 containing LDD information (Aeromedical Services Information Management System, eProfile, and Limited Duty Sailor Marines Readiness Tracker). Nine CDEs were identified: DoD number, sex, race, ethnicity, branch of service, rank, diagnosis, Common Procedural Terminology coding, and cause codes, as they may be captured in any database that is a derivative of the Military Health System Data Repository. Medical Assessment and Readiness Systems contained most variables of interest, excluding injury/place of region and time in service. The Limited Duty Sailor Marines Readiness Tracker contains a variable corresponding to "days on limited duty." The Aeromedical Services Information Management System uses the "release date" and "profile date" to calculate LDDs. The eProfile system determines LDDs by the difference between the "expiration date" and "approved date." In addition, we identified 2 measures on the MHS Dashboard. One measures the percentage of service members (SMs) who are on limited duty for longer than 90 days because of an MSKI and the other tracks the percentage of SMs that are not medically ready for deployment because of a deployment-limiting medical condition. This article identifies core data elements needed to understand and prevent MSKIs and where these data elements can be found. These elements should inform researchers and result in evidence-informed policy decisions supporting SM health to optimize military force readiness.

Vasectomy incidence in the military health system after the reversal of Roe v. Wade.

Dobbs v. Jackson Women's Health Organization (Dobbs decision) has already had profound impact on reproductive health care in the United States. Some studies have reported increased incidence of vasectomy after the Dobbs decision. The Military Health System (MHS) provides a unique opportunity to evaluate this relationship in a universally insured, geographically representative population. We conducted a retrospective cross-sectional study of vasectomies among all male beneficiaries in the MHS, ages 18 to 64, from 2018 to 2022. Beneficiaries receiving a vasectomy were identified via billing data extraction from the MHS Data Repository (MDR). Descriptive statistics of demographic factors of all those receiving a vasectomy in the study period were evaluated. Crude and multivariate logistic regression models were used to evaluate for differences in demographic variables in those receiving a vasectomy pre-Dobb's decision as compared to after the Dobb's decision. The total number of men receiving a vasectomy each month over the study period was analyzed, as were the numbers in a state immediately implementing abortion access restrictions (Texas), and one without any restrictions on abortion access (Virginia). Our analysis found that men receiving a vasectomy post-Dobbs decision were more likely to be younger, unmarried, and of junior military rank than prior to the Dobbs decision. In the months following the Dobbs decision in 2022 (June-December), there was a 22.1% increase in vasectomy utilization as compared to the averages of those months in 2018-2021. Further, it was found that the relative increase in vasectomy after the Dobbs decision was greater in Texas (29.3%) compared to Virginia (10.6%). Our findings highlight the impact of the Dobbs decision on reproductive health care utilization outside of abortion.

Variation in Time-to-Gender-Affirming Hormone Therapy in the US Active Duty Service Members.

Beginning in July 2016, transgender service members in the US military were allowed to receive gender-affirming medical care, if so desired. This study aimed to evaluate variation in time-to-hormone therapy initiation in active duty Service members after the receipt of a diagnosis indicative of gender dysphoria in the Military Health System. This retrospective cohort study included data from those enrolled in TRICARE Prime between July 2016 and December 2021 and extracted from the Military Health System Data Repository. A population-based sample of US Service members who had an encounter with a relevant International Classification of Diseases 9/10 diagnosis code. Time-to-gender-affirming hormone initiation after diagnosis receipt. A total of 2439 Service members were included (Mage 24y; 62% white, 16% Black; 12% Latine; 65% Junior Enlisted; 37% Army, 29% Navy, 25% Air Force, 7% Marine Corps; 46% first recorded administrative assigned gender marker female). Overall, 41% and 52% initiated gender-affirming hormone therapy within 1 and 3 years of diagnosis, respectively. In the generalized additive model, time-to-gender-affirming hormone initiation was longer for Service members with a first administrative assigned gender marker of male relative to female (P<0.001), and Asian and Pacific Islander (P=0.02) and Black (P=0.047) relative to white Service members. In time-varying interactions, junior enlisted members had longer time-to-initiation, relative to senior enlisted members and junior officers, until about 2-years postinitial diagnosis. The significant variation and documented inequities indicate that institutional data-driven policy modifications are needed to ensure timely access for those desiring care.

Clinical Trajectories of Comorbidity Associated With Military-Sustained Mild Traumatic Brain Injury: Pre- and Post-Injury.

In the US military, traumatic brain injury (TBI) is of distinct importance, at home and in the deployed setting, and is considered a "signature injury of the wars in Afghanistan and Iraq." Since 2000, an estimated 468 424 service members (SMs) have been diagnosed with at least one TBI. We examined the clinical trajectories of a group of 18 comorbidities before and after a military-sustained mild TBI (mTBI). Without making assumptions on causality, a group of 18 conditions often co-occurring with mTBI were identified through literature review and TBI subject matter workgroup consensus. Using data from Military Health System Data Repository, we identified SMs whose first lifetime military mTBI occurred between October 1, 2016, and October 30, 2019. Correlation analyses were used to determine the linear relationship between comorbidities prior to and after mTBI diagnosis. Changes in the period prevalence of comorbidities was calculated. We identified 42 018 SMs with a first lifetime military mTBI, of which 77.6% had at least one comorbidity. Identified SMs were mostly young (46.1% ages 18-24 years), male (81.4%), and White (64.1%). Up to 180 days prior to an mTBI, the most frequently identified conditions were sleep-related conditions (21.7%), headaches (19.4%), posttraumatic stress disorders (PTSDs) (17.8%), anxiety disorders (11.3%), and cervicogenic disorders (eg, cervicalgia) (10.9%). In the period following mTBI diagnosis, the prevalence of diagnosed conditions increased, especially for visual disturbances (327.2%), cognitive conditions (313.9%), vestibular conditions (192.6%), those related to headache (152.2%), and hearing (72.9%). Sleep-related conditions showed moderate positive correlation with a group of co-occurring conditions, led by cognitive conditions (ϕc = 0.50), anxiety disorders (ϕc = 0.42), PTSDs (ϕc =0.43), and headaches and related conditions (ϕc = 0.38). Results indicate that caring for SMs with mild TBI requires a holistic approach, one that considers the complex nature of SM conditions, prior to sustaining their mTBI, as well as after injury. We found a complex correlation of conditions that suggest SMs with mTBI are undergoing a multifaceted experience, one that may require the development of a targeted multidimensional clinical practice recommendation and practice.

Association between body composition standards and eating disorder medical claims among active-duty service women.

Eating disorders are a worldwide public health concern with the United States having a particularly high prevalence. Eating disorders are of particular concern to the Department of Defense and Military Health System (MHS) because body composition standards are in place for active-duty service members. We conducted a cross-sectional study of active-duty service women (ADSW) ages 18 and older in the U.S. Army, Air Force, Navy, and Marine Corps during fiscal years (FY) 2018-2019. Utilizing claims data from the MHS Data Repository (MDR), we identified ADSW with a Body Mass Index (BMI) measure during the study period and compared their BMI to Service-specific requirements and diagnosis of an eating disorder. We identified a total of 161,209 ADSW from the MDR in FYs 2018-2019 with a recorded BMI, of whom 61,711 (38.3%) had a BMI exceeding the maximum BMI Service-specific standards during the study period and 0.5% had an eating disorder diagnosis. Increased risk of an eating disorder was found in ADSW with an Underweight BMI. Further, we found that there was no association of disordered eating diagnoses among ADSW who were near the maximum height/weight standard set by their Service. There appears to be no association between body composition standards of the Services and eating disorder diagnoses in ADSW. We were not able to investigate unhealthy habits around diet or exercise directly related to body composition standards.

Low Tensile Strength Suture With Transosseous Tunnels and Suture Anchors 5 mm in Diameter or Greater Are Associated With Higher Failure Rates in Primary Patellar Tendon Repair

To determine the rate of and risk factors for clinical failure and return to military duty following primary patellar tendon repair with either transosseous trunnel repair or suture anchor repair. The Military Health System Data Repository (MDR) was queried to identify all adult patients undergoing surgical treatment of a patellar tendon rupture in the Military Health System from 2014 to 2018. Patients who underwent either transosseous tunnel repair or suture anchor repair were included. Health records were examined to collect additional data. Univariate analysis and multivariate logistic regression models were used to determine independent risk factors for rerupture. A total of 450 knees in 437 patients were included. Transosseous tunnel repair was the most frequently used technique (314/450, 77%), followed by suture anchor repair (113/450, 25%). Rerupture occurred in 33 knees (7%). There was no difference in rerupture rate between transosseous tunnel repair and suture anchor repair (P= .15), and this result persisted within the multivariate logistic regression model. Among transosseous tunnel repairs, use of low tensile strength suture was an independent risk factor for repair failure (odds ratio [OR], 3.4; P= .016). Among suture anchor repairs, use of anchors 5.0 mm in diameter or greater (OR, 12.0; P= .027) was an independent risk factor for repair failure. There is no statistically significant difference in failure rate between transosseous tunnel repair and suture anchor repair in primary patellar tendon ruptures. However, the use of low tensile strength suture with transosseous tunnels and the use of suture anchors 5.0 mm in diameter or greater resulted in significantly higher failure rates. These data suggest that use of high tensile strength suture in transosseous tunnel repair and use of suture anchors less than 5.0 mm in diameter in suture anchor repair result in lower failure rate in primary patellar tendon repair. Level III, retrospective cohort study.

Disparities in Demographics in Hip Arthroplasty Between U.S. Active Duty Military and the ACS-NSQIP Clinical Registry.

Patient demographics, such as sex and age, are known risk factors for undergoing revision following primary total hip arthroplasty (THA). The military population is unique because of the increased rates of primary and secondary osteoarthritis of the hip. Treatment options are limited for returning patients to their line of duty; however, THA has been shown to be an effective option. The primary purpose of this study was to evaluate and contrast the demographic differences of patients undergoing primary THA between the U.S. active duty military population and the general population. The secondary goal was to identify the proportion of primary THA performed at the MTF within the military health system (MHS). This was an exempt study determined by the local institutional review board. A retrospective analysis of the MHS Data Repository (MDR) and the National Surgical Quality Improvement Program (NSQIP) was performed. The databases were used to identify the patients who underwent THA from January 1, 2015 to December 31, 2020. The MDR was used to identify demographics such as sex, age, setting of surgery, geographic location, previous military deployments, history of deployment-related injuries, branch of service, and rank. The NSQIP database was queried for sex and age. The median age of the population was compared using the Mann-Whitney U test and gender was compared using the Chi-square test. The MDR was used to evaluate 2,734 patients, whereas the NSQIP database was used to evaluate 223,832 patients. In the military population, patients who underwent THA were 87.7% male with an average age of 45 years, whereas in the general population as measured via the NSQIP database, 45.2% patients were male with an average age of 66.0 years. Comparing the two groups, we demonstrated that the military patients were significantly more likely to be younger (P < .001) and males (P < .001). Only 29.6% of primary THAs were performed within the MTF. Patients in the MHS are undergoing THA at a younger age and are more likely to be male compared to the general population. A significant portion of primary THAs in the MHS are also being performed at civilian institutions. These demographics may result in increased risk of revision; however, long-term studies are warranted to evaluate survivorship in this unique population.

Racial and ethnic differences in the association between mild traumatic brain injury and work duty limitations in the US military

ABSTRACT Objective This study examined racial and ethnic differences in the association between mild traumatic brain injury (mTBI) and work duty limitations in active-duty service members (ADSMs). Methods This study used retrospective and cross-sectional data from the 2019–2021 Military Health System Data Repository on 910,700 ADSMs who were 18–64 years old and were grouped into racial and ethnic categories of White, non-Hispanic; Black, non-Hispanic; Hispanic/Latino; and Asian or Pacific Islander, non-Hispanic. Results Descriptive statistics showed that Black, Hispanic/Latino, and Asian or Pacific Islander patients had a lower proportion of having a diagnosis of mTBI compared to White patients (ps < 0.001). Further, the proportion of history of deployment varied by racial and ethnic group and deployment location. Multivariate logistic regression results showed odds of 1.52 (p < 0.001) for White patients with mTBI, odds of 1.61 (p < 0.001) for Black patients with mTBI, odds of 1.57 (p < 0.001) for Hispanic/Latino patients with mTBI, and odds of 1.99 (p < 0.001) for Asian or Pacific Islander patients with mTBI for being placed on work duty limitations. Discussion These results advance our understanding of the work duty limitations for racial/ethnic minority patients with mTBI in the Military Health System.

The Influence of Active, Passive, and Manual Therapy Interventions for Low Back Pain on Opioid Prescription and Health Care Utilization.

The aim of this study was to explore associations between the utilization of active, passive, and manual therapy interventions for low back pain (LBP) with 1-year escalation-of-care events, including opioid prescriptions, spinal injections, specialty care visits, and hospitalizations. This was a retrospective cohort study of 4827 patients identified via the Military Health System Data Repository who received physical therapist care for LBP in 4 outpatient clinics between January 1, 2015 and January 1, 2018. One-year escalation-of-care events were evaluated based on type of physical therapist interventions (ie, active, passive, or manual therapy) received using adjusted odds ratios. Most patients (89.9%) received active interventions. Patients with 10% higher proportion of visits that included at least 1 passive intervention had a 3% to 6% higher likelihood of 1-year escalation-of-care events. Similarly, with 10% higher proportion of passive to active interventions used during the course of care, there was a 5% to 11% higher likelihood of 1-year escalation-of-care events. When compared to patients who received active interventions only, the likelihood of incurring 1-year escalation-of-care events was 50% to 220% higher for those who received mechanical traction and 2 or more different passive interventions, but lower by 50% for patients who received manual therapy. Greater use of passive interventions for LBP was associated with elevated odds of 1-year escalation-of-care events. In addition, the use of specific passive interventions such as mechanical traction in conjunction with active interventions resulted in suboptimal escalation-of-care events, while the use of manual therapy was associated with more favorable downstream health care outcomes. Physical therapists should be judicious in the use of passive interventions for the management of LBP as they are associated with greater likelihood of receiving opioid prescriptions, spinal injections, and specialty care visits.

Post-Traumatic Osteoarthritis, Psychological Health, andQuality ofLife After Lower Limb Injury inU.S. Service Members.

The aims of this project were to assess (1) the prevalence and timing of post-traumatic osteoarthritis (PTOA) after a traumatic lower limb injury, (2) the risk of PTOA based on injury type, and (3) the association of PTOA with psychological health and quality of life (QoL). The Wounded Warrior Recovery Project (WWRP) database and the Expeditionary Medical Encounters Dataset were queried to identify service members injured during deployment. The Military Health System Data Repository was utilized to extract medical record data to identify individuals with PTOA. Data on PTSD, depression symptoms, and QoL were extracted from the WWRP. Of the 2,061 WWRP participants with lower limb injuries, 124 (6%) were diagnosed with PTOA, with first PTOA diagnosis occurring 3.8 ± 3.1 years after injury. Of the injury categories identified, only fractures were associated with high odds of lower limb PTOA (adjusted odds ratio [OR] = 3.92, 95% confidence interval [CI]: 2.38, 6.44). Individuals with PTOA diagnoses reported lower QoL scores relative to those without PTOA (F(1,2057) = 14.21, B = -0.05, P < .05). Additionally, rates of PTSD and depression symptoms were high but not different between those with or without PTOA. Despite a low prevalence of lower limb PTOA in our study, fractures increased the risk of PTOA after deployment-related injuries. Additionally, those with PTOA reported lower QoL scores relative to those without PTOA. The findings of this study highlight the personalized needs of patients with trauma beyond just the repair of the immediate injury.

The Impact ofthe COVID-19 Pandemic onthe Military Health System's Care ofMilitary Sexual Assault.

Sexual assault remains a high priority challenge for leaders in the U.S. military. The COVID-19 pandemic further complicated the issue by disrupting work and lifestyles, potentially affecting reporting and care-seeking by victims. To date, there are no studies addressing the impact of changes in access to health services and reporting of sexual assault by active duty service members to inform medical and public health interventions in a post-COVID-19 era and during future public health emergencies. Using the Military Health System Data Repository (MDR), we identified a retrospective open cohort of active duty servicemembers receiving care in the Military Health System (MHS) from fiscal years 2018 to 2021. Through the use of ICD-10 diagnostic codes, all corresponding sexual assault care was identified for the cohort before (October 1, 2017-February 28, 2020; pre-pandemic period) and after (March 1, 2020-September 30, 2021; pandemic period) the institution of COVID-19 pandemic protective measures. Pre-pandemic and pandemic period rates of sexual assault associated encounters per 10,000 total health encounters were calculated by geographic location and compared using Wilcoxon's sign rank test. Multivariate log binomial regression models were performed to estimate associated risk of sexual assault among active duty servicemembers and compared across both periods. The study identified 47,067,073 encounters for servicemembers in the pre-pandemic period, of which 7,813 (0.016%) were associated with sexual assault. During the pandemic period, 4,377 (0.015%) of 28,926,480 encounters were associated with sexual assault, indicating a 44% reduction in total encounters and a 9% reduction in the proportion of encounters associated with sexual assault. Eighteen installations within the MHS had statistically significant increases in rates of encounters. Most sexual assault encounters occurred in the 20-24 year age, Female, White, Junior Enlisted, Army, and Unmarried categories. During both time-frames, younger age and being female were associated with an increased risk of sexual assault encounters. Race, service branch, and marital status were also associated with the risk of encounters. Contrary to reports indicating a modest increase in the number of sexual assaults reported within the DoD, we found a reduction in the frequency of healthcare encounters associated with sexual assault during the pandemic which may be related to reduced access to care. Men comprised approximately 22% of sexual assault encounters delivered through the MHS although the racial distribution of encounters approximates the estimates of the DoD-published demographic statistics. This study illustrates that COVID-19 measures appear to have reduced access to care for sexual assault within the MHS but did not demonstrably alter the demographics of servicemembers seeking care. These findings suggest that the MHS may require contingency plans for future disruptions to care and public health emergencies.