Requests For Screening Research Articles

Interest of toxicological analysis in patients admitted to a pediatric emergency department

Objective: Evaluate the interest of toxicology screening in the management of patients in a pediatric emergency department, by assessing its diagnostic utility. Patients and Methods: This is a retrospective cross-sectional study conducted over two years in the Emergency Department of the Abderrahim Harouchi Mother and Child Hospital, of the Ibn Rochd University Hospital in Casablanca, Morocco. We included all children who underwent qualitative toxicological screening by Gas Chromatography coupled with Mass Spectrometry (GC/MS). A descriptive analysis was conducted on the clinical and toxicological characteristics of the patients. The contingency test allowed us to compare the context of the toxicological screening request and its diagnostic utility. Results: Eighty-seven children were included, with a Male-to Female sex ratio of 1.2. The age of the patients ranged from 1 month to 14 years, with a median of three years. Among the included population, 119 screenings were performed. Drugs were implicated in 27 cases, while 4 pesticide intoxications were found, including carbofuron, chloralose, methomyl and terbucarb, along with 2 cannabis intoxications. A proportion of 88% of screening requests, made in the absence of clinical guidance, turned out to be positive, accounting for 31% (24 cases out of 77) (p<0.001). Conclusion: Toxicological analysis is a valuable tool to assist the clinician in managing intoxications by confirming or excluding the toxic hypothesis. However, toxicological analysis can only be useful and effective, avoiding analytical pitfalls, in the presence of dialogue between the clinician and the analyst.

Women Accessing Care at a National Network of Retail Health Clinics.

Background: Retail health clinics offer easy access and lower costs in seeking nonemergent and usually focused care. The objective of this observational study was to describe the use of retail clinic services by women at MinuteClinic at CVS, the largest network of retail clinics in the United States. Methods: The retail clinic's large database included complete national data for every in-person encounter as recorded on the same electronic health record. Virtual care and pharmacist-delivered services like COVID-19 testing were excluded from the analysis. The primary reason for the visit and the patient's age group (<15, 15-44, 45-64, ≥65 years) and self-reported sex were recorded at each encounter from the most recent 5 years (January 1, 2018, to December 31, 2022). Results: There were 17,969,483 encounters by women seeking care, and women ≥15 years old were more likely than men to attend the clinics. Half of all encounters (50.6%) were for non-gynecologic acute care, whereas one-third (33.6%) dealt with either an infection or the need for a vaccination. Gynecologic reasons involved 5.6% of all encounters in women ≥15 years of age. No obstetrical care was provided except for pregnancy testing with referral, acute non-obstetric needs, or guideline-recommended vaccinations. Conclusion: Women, especially of reproductive age, are more inclined than men to seek care at retail clinics. Acute care is the most common need, although requests for immunizations, infection screening and treatment, and reproductive health issues occurred often.

3.2 Trends in ADHD Screening Requests Before and During the COVID-19 Pandemic

3.2 Trends in ADHD Screening Requests Before and During the COVID-19 Pandemic

147 A Digital Approach to Syphilis Infection Prevention

OBJECTIVES/GOALS: The goal of this study is to explore the effectiveness of a digital health education curriculum aimed at increasing syphilis beliefs and screening behavior among young African American females residing in Jefferson County, AL. METHODS/STUDY POPULATION: Study Population: African American, cis-gender women, aged 18-29, who reside in Jefferson County, AL Sample Size: N = 50 Measurements: 1) Champion Health Belief Model scale adapted for measuring syphilis perceptions and syphilis screening behavior Analysis Plan: IBM SPSS Statistics 29 will be used to analyze intervention data. Pre-and post-intervention data will be analyzed to calculate a screening request rate for each period. We will use Cohen’s D effect sizes to measure screening requests rate differences post intervention completion. The small sample size and exploratory nature of this project make the descriptive statistics valuable. RESULTS/ANTICIPATED RESULTS: We anticipate that the digital syphilis prevention intervention will positively influence participants’ beliefs regarding syphilis and their syphilis screening behaviors. DISCUSSION/SIGNIFICANCE: Innovative preventive approaches to reducing syphilis disease spread is a national priority as rates have risen annually throughout the last decade. African American women experience the greatest disease burdens associated with syphilis. This study leverages tailored strategies to effectively address this ailment in the target population.

Prostate cancer risk assessment by the primary care physician and urologist: transabdominal- versus transrectal ultrasound prostate volume-based use of the Rotterdam Prostate Cancer Risk Calculator.

Our objective was to assess the accuracy of transabdominal ultrasound (TAUS) measured prostate volume in the primary care setting with transrectal ultrasound (TRUS) measured prostate volume by the urologist as the reference test. Furthermore, our objective was to assess whether risk-stratification using TAUS prostate volume by the primary care physician could reduce unnecessary referrals to the urologist. Men in two Dutch primary care offices with a prostate cancer (PCa) screening request received a digital rectal examination (DRE), prostate specific-antigen (PSA), and TAUS prostate volume measurement by the general practitioner, followed by Rotterdam Prostate Cancer Risk Calculator (RPCRC) risk assessment. The examination was repeated by a urologist using TRUS. A prostate biopsy was performed in case of a RPCRC positive biopsy advice. A non-inferiority analysis was performed comparing TAUS and TRUS prostate volume differences. A risk-based referral strategy using TAUS and the RPCRC in the primary care setting was compared with the standard referral strategy based on PSA (≥3 ng/mL) and DRE. A total of 105 men were included with a median PSA of 1.9 ng/mL. The mean prostate volumes measured by TAUS and TRUS were 55 and 45 mL, respectively. The mean overestimation of the prostate volume by TAUS as compared to the reference test was 9.9 mL (95% CI: 5.9-13.8). According to Dutch standard practice, 41 out of 105 (39%) men would have been referred to the urologist. Stratification in primary care based on the RPCRC using TAUS prostate volume would have avoided 29 out of the 41 (71%) referrals, at the expense of non-referral of 5 out of 11 (45%) men with a biopsy indication, according to the urologist. RPCRC-based risk stratification in primary care using TAUS prostate volume measurement is feasible and may prevent unnecessary referrals to the urologist and reduce costs. The accuracy of the risk assessment with TAUS might be improved by sufficient training and centralization to achieve a higher volume of consultations in primary care facilities.

“Extremely Creepy, but Nothing he did was Illegal”: Charging Patterns During Prearrest Screening

We examine an approach to case screening where prosecutors screen requests for charges before a felony arrest is made. In 2016, Franklin County prosecutors declined to authorize arrests in 17.5% of felony cases. Declination rates, however, varied widely between offense types. Prosecutors most commonly did not authorize an arrest due to insufficient evidence, no crime having occurred, or follow-up needed. Among other findings, the cases of Black defendants, as compared to White defendants, were more likely to be declined due to insufficient evidence and additional follow-up needed. We conclude that prearrest screening by prosecutors can filter out weak cases early, increasing efficiency for the prosecutor’s office, saving the government money, and minimizing the impact of a “bad” arrest on a defendant.

LC-MS-MS Determination of 88 Psychotropic Drugs in 1,865 Hair Samples from Addicts in Drug Abstinence.

The emergence of novel drugs and the continuous expansion of the scope of the types of drugs under control have greatly increased requests for screening of a range of drugs in hair. Here, a multi-analyte method for the detection and quantification of 88 psychotropic drugs in the hair of addicts in drug abstinence was developed and fully validated using liquid chromatography–tandem mass spectrometry (LC–MS/MS). Hair samples (25 mg) were washed, cut into pieces, cryogenically ground and extracted in methanol. The extracted analytes were separated on an Allure PFP Propyl column (100 × 2.1 mm, 5 mm inside diameter, Restek, USA) and analyzed by LC–MS/MS in multiple reaction monitoring modes. The limits of detection and the limits of quantification ranged from 0.1 to 20 pg/mg and 0.2 to 50 pg/mg, respectively. The intra- and inter-assay precisions (relative standard deviation (RSD)) of all analyses ranged from 0.9% to 14.9% and 1.9% to 15.9%, respectively. Accuracy values were 100 ± 20%. The extraction recovery of quality control samples ranged from 50.9% to 99.6% for all analytes. The matrix effects for all analytes ranged from 46.8% to 99.7%. The method was successfully used to analyze 1,865 hair samples from addicts in drug rehabilitation at their own communities. Among the samples, 129 cases were positive; the majority of positive cases were from males (78.29%), 92.25% of whom were >35 years old. Traditional drugs, like methamphetamine and opioids, accounted for most positive cases, and 27 of the abstinence cases with a use history of methamphetamine were still positive. In addition to abused drugs, like methamphetamine, morphine and cocaine, the sedative-hypnotic and psychotherapeutic drugs, including clonazepam, alprazolam, estazolam, zolpidem and quetiapine, were detected in 26% of the hair samples, suggesting that these addicts may have insomnia and mental problems such as depression and psychosis, probably due to the long-term effects of drugs and withdrawal reactions. Three synthetic cannabinoids were also detected in four (2.7%) cases. A total of 37 cases were positive for methadone, tramadol and dextromethorphan, reflecting a new trend of alternative drug use when traditional drugs were not easy to obtain during the coronavirus disease 2019 outbreak.

Reproductive genetic carrier screening for cystic fibrosis, fragile X syndrome and spinal muscular atrophy: patterns of community and healthcare provider participation in a Victorian screening program.

The Royal Australian and New Zealand College of Obstetricians and Gynaecologists and The Royal Australian College of General Practice recommend that information on carrier screening for at least the most common inherited genetic conditions in our population, that is, thalassaemia, cystic fibrosis (CF), spinal muscular atrophy (SMA), and fragile X syndrome (FXS), should be offered to all women planning pregnancy or in early pregnancy regardless of family history or ethnicity. The aim of this study was to investigate patterns of participation by healthcare providers (HCP) and the community in screening. Participation in a Victorian program screening for CF, SMA and FXS between September 2013 and October 2018 was analysed. Requesting HCP and patient data were extracted from screening request forms. Data were analysed with respect to profession of requesting HCP, and characteristics of women screened (age, pregnancy status, socioeconomic status, geographic location, and family history of CF, SMA or FXS). In total, 21 172 women and 1288 HCPs participated in the program over this period. There was a steep socioeconomic gradient in screening uptake, with nearly half the women screened (10 349) being in the highest socioeconomic quintile. The screening rate was much higher in metropolitan areas than in regional areas. Obstetricians made most of the requests for screening, whereas 20% of requests were by GPs. Most participating GPs only made a single screening request (78%) and very few GPs made >100 screening requests compared with obstetricians (0.2% vs 17%). GPs were more likely to screen women before pregnancy compared with obstetricians (47% vs 11%). Approximately 1.5% of Victorian women of child-bearing age and 3% of pregnant Victorian women were screened by this program over the period of this study. This study highlights the translation gap between recommendations and practice, with marked inequity of access to reproductive genetic carrier screening in relation to socioeconomic status and geography. Increased participation by GPs could improve community access to reproductive genetic carrier screening, particularly access to preconception screening. Addressing the causes of inequity of access will allow more women and couples the opportunity to make informed choices about participation in screening.

Measuring the Change in Health-Related Quality of Life in Patients Using Marijuana for Pain Relief

Introduction: Current evidence suggests that cannabinoids are safe with minimal side effects and are effective in managing chronic pain. Data also show that medical marijuana (MM) may improve quality of life (QoL) among patients. However, there are little data showing the health-related QoL (HRQoL) benefit in MM patients using it for pain. The purpose of this study was to determine if there is a relationship between HRQol and MM use in patients using it to relieve pain. Methods: All pain patients aged 18 years or older enrolled in the Pennsylvania MM program were eligible for inclusion. Recruited subjects completed 4 surveys – at enrollment (baseline) then 2, 4, and 8 weeks post-enrollment. We used the EQ-5D survey tool for measuring HRQoL. The primary outcome measure was the change in the EQ-5D Index Score from survey 2 to survey 4 (6 week difference). Secondary outcomes included self-reported pain and health scores. Data were analyzed using a paired t test and repeated-measures multivariable analysis to control for both gender and length of time between surveys. Results: 1,762 people responded to the screening request, and 1,393 (79%) met screening criteria. Of those, 353 (25.3%) agreed to participate and 51% completed all 4 surveys, for a final sample of 181 with 85 male and 95 female and one nonbinary subject. The average age was 41.21 (SD = 12.9) years, with no difference between genders. The adjusted HRQoL score improved from 0.722 to 0.747 (p = 0.011) from survey 2 to survey 4, as did the self-reported pain and health scores. The EQ-5D subscales revealed no change in mobility or usual activities, significant improvement in anxiety and pain, and a significant worsening in self-care. Conclusion: The results show a significant improvement in HRQoL among patients using MM for pain. The EQ-5D subscales validated the pain improvement and also showed an improvement in anxiety. However, the decline in the self-care subscale may have tempered the overall improvement in HRQoL, and further research into which aspects of self-care are impacted by MM use in this population is warranted. Overall, there is a positive relationship between MM use and HRQoL in patients using it for pain.

Comparison of the Clauss and Prothrombin Time-Derived Fibrinogen Methods in Patients with Dysfibrinogenemia, and Verification of their Reference Interval

Introduction: Dysfibrinogenemia is a coagulation disorder caused by abnormal fibrinogen functions, with ever-growing concern in medical field. Therefore, it is critical to establish and optimise effective methods, both in terms of efficient and accurate clinical diagnosis and cost effectiveness. Methods: Fibrinogen assays; PT-derived and Clauss quantification are such method. This study, compared fibrinogen concentrations determined by the Clauss and PT-derived methods in 80 patients (diseased clinical group) and in 20 and 120 healthy patients (pilot and main study respectively). Reference interval verification was done following the Clinical and Laboratory Standards Institute guidelines. Results: There was a significant difference between Clauss fibrinogen and PT-derived fibrinogen irrespective of sample clinical groups, although, the discrepancy between these two assays appeared to correlate. Normal patients (mean PT-Fib 4.50 vs Clauss 3.07g/l, p &lt;0.0001), r = 0.7567. Liver/renal dysfunction (mean PT-Fib 2.20 vs Clauss 1.75g/l, p = 0.0003), r = 0.8622. Critically-ill (mean PT-Fib 2.7 vs Clauss 2.17g/l, p &lt;0.0001), r = 0.9553 and OAC (mean PT-Fib 3.49 vs Clauss 2.49g/l, p = 0.0004), r = 0.8158. 70% of PT-derived and 95% of Clauss fibrinogen results were within the reference interval 1.5 – 4.5 g/L. Verification of the published reference interval failed as &gt;10% of the PT-derived results were outside the reference interval. Conclusion: Performing both PT-derived and Clauss methods on all clotting screen requests will prevent missed diagnosis, although, it will provide extra cost of £10,825. Thus, it is necessary to determine fibrinogen reference intervals for both the PT-derived and Clauss methods. Until further studies verify a reference interval for PT-Fib at the IH, the Clauss assay is a preferable diagnostic tool when treating patients with low fibrinogen concentrations. The PT-derived may erroneously report patients’ plasma fibrinogen concentration as normal.

An audit of disseminated intravascular coagulation screen requests at an academic hospital laboratory in central South Africa.

Disseminated intravascular coagulation (DIC) is a feared complication of various systemic illnesses. We aimed to evaluate the laboratory requesting practices of clinicians, especially concerning the laboratory parameters, included in the International Society of Thrombosis and Haemostasis (ISTH) DIC score. A retrospective descriptive study was performed and included data from DIC screen requests analysed at Universitas National Health Laboratory Service (NHLS) laboratory, Bloemfontein, South Africa, for one calendar year. Laboratory request forms were analysed, recording the pretest diagnosis and whether the diagnosis was associated with DIC. Parameters of the DIC screen, prothrombin time, activated partial thromboplastin time, thrombin time, d-dimer and fibrinogen were used to calculate the ITSH DIC score and diagnose heparin contamination. The platelet count, currently not part of the DIC screen test set, was also recorded. A total of 778 DIC screen requests were processed. One hundred and eighty-three requests were excluded due to laboratory-defined rejection criteria, heparin contamination or for lacking an ISTH score parameter. Of the remaining 595 complete requests, 283 (47.7%) were laboratory-defined overt DIC. The pretest diagnosis was not predictive of either a positive or negative finding of overt DIC. The contribution of fibrinogen to assigning overt DIC was questionable. The number of DIC screen requests received highlights the need for laboratory evidence of DIC. To improve laboratory DIC testing, the authors suggest critical evaluation of the contribution of the pretest diagnosis and fibrinogen in a prospective study and adding the platelet count in our local DIC test set.

One-Third of Open Access Colon Cancer Screening Requests Require a Clinic Appointment

Background Open access colonoscopy (OAC) allows for patients at low-risk for endoscopic complications to receive a colonoscopy (CSP) without a preprocedural appointment. This can reduce wait times for screening and increase appointment availability for symptomatic patients. Methods At Walter Reed National Military Medical Center, we enacted an OAC program in 2014 for our TRICARE beneficiaries. Patients due for colon cancer screening or polyp surveillance can submit an online questionnaire through a secure website. Our scheduling department reviews all questionnaires, and patients with prespecified criteria are seen in clinic prior to their procedure. The remainder of patients have their surveys reviewed by a gastroenterologist for suitability and are scheduled for CSP or computed tomographic colonography. In 2018, the OAC program was expanded to all military hospitals in the national capital region (NCR). Results Prior to expanding Walter Reed's OAC program, 6713 total screening requests were made. The requested procedure was CSP in 69.9% of patients. Of patients who fell outside the 45-75 age range, 14.1% were under the age of 45, and 2% were over the age of 75. 31.6% of OAC patients required a clinic appointment. Following incorporation of the NCR, 2290 screening questionnaires have been completed without significant change to the absolute percentages of those requiring appointments. Conclusion By avoiding unnecessary clinic visits for asymptomatic individuals, OAC programs increase availability in gastroenterology practices to see symptomatic patients.

Inappropriate screening of obstructive coronary artery disease during pre-anesthesia assessment of candidates for non-cardiac surgery.

Preoperative evaluation in elective surgeries has been associated with successful surgical treatment. However, there is no solid scientific evidence that screening for coronary artery disease (CAD) reduces surgical risk. The aims of this study were to describe the frequency of inappropriate investigation of obstructive CAD induced by pre-anesthetic assessment in individuals without cardiovascular symptoms (candidates for low- to intermediate-risk surgeries) and to evaluate predictors of this conduct. We performed a retrospective evaluation of medical records of anesthesiology services from patients undergoing pre-anesthesia assessment between May 2015 and May 2016, including those with functional capacity ≥4 metabolic equivalents without a diagnosis of heart disease. A total of 778 medical records (47±16 years of age, 62.6% female) were studied. A private hospital performed 50.1% of the surgeries and 60.4% were of intermediate risk. Only 2.7% (95%CI: 1.7-4.1%) were screened for CAD, and 91% of these requests were mediated by cardiology consultations performed during pre-anesthetic testing visits. Factors associated with screening for CAD were hypertension, diabetes, moderate systemic disease (ASA III), cardiac consultation, previous diagnosis of CAD, and admission to a private hospital. Independent predictors were private hospitals (OR: 3.9; 95%CI: 1.3-11.0), ASA III (OR: 5.3; 95%CI: 1.7-16.2), and hypertension (OR: 3.8; 95%CI: 1.5-9.8). The frequency of inappropriate requests for CAD screening in asymptomatic individuals without untreated systemic diseases was low in pre-anesthetic visits. Although infrequent, screening for CAD is more common in the private setting, in patients with poorer health status, and is usually prescribed during cardiology consultation.

Comparison of in-person and telegeriatric follow-up consultations

Introduction Telehealth has the potential to support the care of older adults and their desire to age at home by providing a videoconferencing connection to specialist geriatric care. However, more information is needed to determine how telehealth services affect the care of older adults, and how telehealth services for older adults compare to traditional in-person methods of care provision. The aim of this study was to compare telegeriatric and in-person geriatric consultation methods with respect to outcomes and costs. Methods This was a retrospective chart analysis of consultation letters from patients’ first follow-up appointment with a geriatric specialist during the 2017/2018 fiscal year (N = 95) in a health jurisdiction of a Western Canadian province. Results Patients seen through telehealth and in person were similar in mean age (M = 79.1 and 78.1 years, respectively) and were predominately female. Telegeriatric consultations resulted in more requests for further testing and screening (p = 0.003), new diagnoses (p = 0.002), medication changes (p = 0.009) and requests for follow-up (p = 0.03) compared to in-person consultations. An average one-day clinic with one geriatric specialist providing consultations through telehealth cost Can$1684–$1859 less than an equivalent in-person clinic. Discussion Although additional research is needed to explain the differences in outcomes further between telehealth and in-person consultations found in this work, telehealth consultations cost substantially less than in-person consultations and are a promising way to improve access to geriatric care for older adults in underserved areas.

"Routine" Laboratory Test Requests in Family Medicine: A Cross-Sectional Study Based on Clinical Practice in Portugal

In Portugal, patients still believe they should perform a periodic check-up. The present study was designed to study the prescription pattern of "routine" laboratory tests in the Family practice in Portugal. We performed a cross-sectional study in the Portuguese primary healthcare setting. We surveyed physicians on their "routine" laboratory test request pattern and the reasons for requesting or not requesting laboratory tests. The questions were based on the panel of the most prescribed tests in the of Central Lisbon health centre group. Most of the inquired doctors said they requested "routine" laboratory tests (51.4%). There is a significant difference in the request of "routine" laboratory tests performed by trainees or specialists (p = 0.013). The most requested laboratory tests in adults are total cholesterol (92.2%) and blood glucose while the most requested laboratory tests in children are blood glucose, total cholesterol and full blood count. Many doctors (79.4%) that request "routine" laboratory tests do so to perform screening and the doctors that do not request routine" laboratory tests do so mainly (80.8%) because there's lack of scientific evidence. We found differences in the prescription pattern of Family Physicians in Portugal, namely regarding the request of "routine" laboratory tests by doctors from different regions, degrees of specialization and age. We found that there is an association between prescribing "routine" laboratory tests and their request for screening. These physicians aparently want to track different types of pathology, even though patients have no symptoms or risks that could justify it. Most doctors, who do not prescribe "routine" laboratory tests, do not agree with screening for asymptomatic individuals, which is consistent with the evidence. Our results suggest that there is an excessive request of laboratory tests which can lead to overdiagnosis and overtreatment that requires global Social Marketing strategies to change the prevailing culture.

Identifying and overcoming clinical trial enrollment barriers: Can an integrated clinical pathways tool help bridge the gap?

2046 Background: Barriers to clinical trial (CT) enrollment continue to be a national challenge, with only about 3% of adult cancer patients treated within a CT. A key recommendation from the 2013 NCI-ASCO Cancer Trial Accrual Symposium was to use information technology to enhance identification of potentially eligible patients for CTs. We assessed if the implementation of a Clinical Oncology Pathways System (COP) with integrated CT information increased enrollment of CT’s, and categorized physician-identified reasons for non-enrollment. Methods: In 2018, Roswell Park Comprehensive Cancer Center (RP) implemented ClinicalPath pathways (formerly Via Oncology) for medical oncology. The COP software embeds interventional CTs that are open to accrual at RP in the pathway specific to a patient’s disease type, stage and biomarkers. The provider is presented with relevant CTs and must select screening for the trial or provide a reason for bypassing the CT from a drop-down list prior to being presented standard care options. CT screening requests from the COP system from 6/1/18-5/31/19 were reviewed. Screening requests and actual enrollment data were matched. The accrual-to-study ratio (ASR), defined as the number of consented accruals divided by the number of CTs open to accrual at RP at any time during the period, was calculated for the study period and the baseline from 6/1/14-6/1/18. The reasons physicians did not elect to screen for CTs were summarized. Results: There can be multiple trials presented for each pathway decision.There were 1,606 decision points with at least one embedded trial. Of these, 1,289 decision points matched 2,242 CTs that were not selected for screening. 317 trials were selected for screening. The most common reasons for not screening were patient ineligibility (41%), provider bypassing the CT by selecting treatment “off pathway” (28%), patient not interested (12%), patient already on CT (8%) and “other” (9%). Audits confirmed that the majority of ineligible patients had co-morbidities such as organ dysfunction or brain metastasis that precluded them from the CT. Among the 317 trials selected for CT screening, 108 (34%) patients enrolled in CTs. The ASR increased from the four-year historical average baseline of 4.08 to 4.33 one year post-implementation. Conclusions: The use of COP with embedded CT was associated with a modest increase in ASR. Stringent eligibility criteria was the primary barrier to enrollment. Adopting a broader set of clinical trial eligibility criteria could increase enrollment to CT.

Impact of organized colorectal cancer screening programs on screening uptake and screening inequalities: A study of systematic- and patient-reliant programs in Canada

BackgroundVarious provincial colorectal cancer screening programs have been implemented in Canada but have yet to be evaluated. ObjectiveWe examined the effects of patient-reliant and systematic organized colorectal screening programs on colorectal cancer screening uptake and on screening inequalities by income, education, rural residence, and access to a primary care physician. MethodsLifetime and recent (< 1, <2 years) stool-based screening uptake were assessed among Canadian Community Health Survey respondents (cycles 2003–2014), aged 50–75 years, with no personal or family history of colorectal cancer. We used a difference-in-differences approach to estimate the effects of two systematic provincial programs (where all eligible residents receive screening kits via mail), and one patient-reliant program (where residents receive screening kits via mail following their request to a physician, phone line or website). ResultsOverall, systematic and patient-reliant programs were associated with a 4- [95 % CI: 1%, 7%] and a 12-percentage point [95 % CI: 2%, 8%] increase in recent (<2 years) stool-based screening, respectively, with effect sizes converging after three years at approximately 10 %. The patient-reliant program was associated with an 11 % [95 % CI: 5%, 17 %] increase in uptake among those with a physician, but no effect among those without—leading to increased inequality in uptake according to physician access. InterpretationBoth program types increase colorectal screening overall. Reliance on patients’ request for screening may increase disparities according to physician access. Exploration of complementary targeted interventions in patient-reliant settings appears warranted.

Optimization of the thyroid panel for diagnostic purposes: Thyrotropin cut-off values for the reflex addition of free thyroxine

Background-aimMeasurement of serum thyrotropin is currently the recommended test for the screening of thyroid dysfunction, while serum free thyroxine is kept as a reflex test. In our laboratory, the strategy followed in adult individuals from Primary Care includes a ‘safety margin’ for requests with a thyrotropin ≤1.0 or ≥4.0 mIU/L (normal: 0.35–4.95 mIU/L).Our aim was to optimize the thyrotropin cut-off values for the addition of free thyroxine and, based on these cut-offs, to retrospectively analyze avoidable free thyroxine measurements and possible adverse clinical consequences. MethodsRetrospective observational study performed in a tertiary care hospital between 2013 and 2018. We considered all laboratory requests for screening of thyroid dysfunction (TD) in adult patients from Primary Care. Requests from patients with a previous diagnosis of thyroid disease or pregnant women were excluded.Different receiver operating characteristic (ROC) curves were performed and the obtained thyrotropin cut-off values were compared. Economic savings were assessed considering the current cost of free thyroxin assays in our laboratory. ResultsFrom a total of 554,529 TD protocols included, 119,504 requests had free thyroxine added.From the ROC curve that enables ≥95% of abnormal free thyroxine results to be detected, the thyrotropin values obtained were ≥4.58 mIU/L and ≤0.94 mIU/L. These thyrotropin cut-off values would lead to a saving of 22.7% of annual free thyroxine measurements without adverse clinical consequences. DiscussionSetting optimized thyrotropin cutoffs for reflex testing of free thyroxine would reduce the need for this test. Clinical laboratories need to offer not only true results, but also become the cornerstone in the optimization of resources.

Metabolic Stone Screening – Can Education Improve Adherence to National Guidelines?

Nephrolithiasis is a common urological disease affecting approximately 13% of the global population. Identifying a preventable cause during follow-up for stone formation is a necessary factor in reducing recurrence. The majority of kidney stones are comprised of calcium, with oxalate and phosphate compounds account-ing for approximately 80% of stone formers. Serum analysis can be used to identify the levels of calcium in the blood, excluding metabolic causes for stones. Current NICE guidelines recommend performing a metabolic screen during an acute admission. Adherence to these guidelines from clinicians can be poor. We aim to see whether education can improve serum metabolic requests from clinicians in the UK. Method A case-control study was performed in a single rural district general hospital in the UK. Patients who pre-sented with renal colic were analyzed retrospectively for four months, looking at serum metabolic screen requests. Two months of education was then delivered to acute departments, with a further prospective study performed following this for six months. Outcomes were then compared between both groups to see if there was an improvement in serum requests following the delivery of local education. Results A total of 124 patients were included in our study. 50 patients were analyzed in cohort A over a 4-month period. Complete serum analysis was performed on 22% (n=11) of patients. Incomplete serum analysis was performed on 58% (n-29) of patients with uric acid being missed on all of them. 10 patients had no metabolic serum analysis performed at all, with 1 patient having a previous history of stones. A total of 74 patients were analyzed in cohort B over a 6-month period. This was following the 2 months of departmental education given by urologists. Complete serum analysis was performed on 24% (n=18) of patients. Incomplete serum analysis was performed on 55% (n=41) of patients with uric acid being missed from all of them. The remaining 21% of patients (n=15) had no metabolic serum screen performed at all. There was no significant difference seen between both cohorts after comparing metabolic serum requests before and after department education for 2 months (p=0.7287). Conclusion Improving adherence to clinical guidelines for metabolic screening has proved difficult with departmental teaching alone, with very little improvement achieved. Nevertheless, formal face-to-face education is ad-vocated to reinforce knowledge in junior doctors managing renal stones.

Survey of primary care physicians' views about breast and ovarian cancer screening for true BRCA1/2 non-carriers.

Despite some controversy, true BRCA1/2 non-carriers are generally considered to be at an average risk for breast and ovarian cancer. Primary care physicians are then expected to encourage their non-carrier patients to adopt cancer screening practices appropriate to women of the same age in the general population. This study aimed to describe breast and ovarian cancer screening recommendations that primary care physicians would consider advisable for young true BRCA1/2 non-carriers. One hundred thirty-four family physicians and 123 gynecologists (response rate 45%) completed a cross-sectional mailed survey administered in the Province of Quebec, Canada. The survey included questions about basic genetic knowledge and screening recommendations for two fictitious cases (< 40years), one carrier and one non-carrier, from a BRCA1/2 mutation-positive family. Screening exams considered advisable did not differ significantly between family physicians and gynecologists. More than 75% of physicians considered the cancer risks of true non-carriers to be comparable with that of the general population and 14% to be a little higher. Still, 53% would prescribe a biennial and or even an annual (27%) mammography to a non-carrier woman before the recommended starting age. Physician considerations of non-carriers' expectations or requests for screening were associated with more screening prescriptions. More than half of primary care physicians would recommend more mammography screenings than expected for a young true BRCA1/2 non-carrier. Personalized cancer risk assessment may help primary care physicians tailor screening of women from BRCA1/2 mutation-positive families and allow these women to make more informed choices regarding cancer risk management options.