Population-based Data Research Articles

Chronic pain management in primary care: Using population-based data to examine family physician practice patterns.

To examine trends in chronic pain (CP) practice patterns among community-based family physicians (FPs). Population-based descriptive study using health administrative data. British Columbia from fiscal years 2008-2009 to 2017-2018. Patients with an algorithm-defined CP condition and community-based FPs, both registered with the British Columbia Medical Services Plan. Using British Columbia health administrative data and a CP algorithm adapted from a previous study, the following were compared between fiscal years 2008-2009 and 2017-2018: CP patient volumes, pain-related medication prescriptions, referrals to pain specialists, musculoskeletal imaging requests, and interventional procedures. In the fiscal year 2017-2018, among community-based family physicians (N=4796), an average of 32.5% of their patients had CP. Between 2008-2009 and 2017-2018, the proportion of CP patients per FP who were prescribed long-term opioids increased by an average absolute change of 0.56%; the proportion prescribed long-term neuropathic pain medications increased by 1.1%; and the proportion prescribed long-term nonsteroidal anti-inflammatory drugs decreased by 0.49%. The proportion of musculoskeletal imaging out of all imaging requests made by FPs increased by 2.0%; pain-related referrals increased by 1.73%; there was a 4.6% increase in the proportion of community-based FPs who performed 1 or more pain injections; and 10% more FPs performed 1 or more trigger point injections within a fiscal year. Findings show that the work of providing care to patients with CP increased while CP patient volumes per FP decreased. Workforce planning for community-based FPs should consider these increased demands and ensure FPs are adequately supported to provide CP care.

Inter-Ethnic Variations in the Clinical, Pathological, and Molecular Characteristics of Wilms Tumor.

Wilms tumor is the commonest primary renal malignancy in children and demonstrates substantial inter-ethnic variation in clinical, pathological, and molecular characteristics. Wilms tumor occurs at a lower incidence and at a younger age in Asians compared to Caucasians and Africans. Asians also present at an earlier stage of disease, with a higher incidence of favorable histology tumors and a lower incidence of perilobar nephrogenic rests compared to Caucasians, while African children present with more advanced disease. Studies have implicated population differences in the incidence of WT1 mutations, loss of imprinting of the IGF2 locus, and loss of heterozygosity of 1p/16q, or 1q gain as possible bases for epidemiological differences in the disease profile of Wilms tumors in various ethnic groups. Yet, evidence to support these associations is confounded by differences in treatment protocols and inequalities in the availability of treatment resources and remains limited by the quality of population-based data, especially in resource-limited settings.

Surgery for intestinal injuries in very preterm infants: a Norwegian population-based study with a new approach to disease classification

ObjectiveTo evaluate population-based data on very preterm infants (<32 weeks gestation) operated for intestinal injuries, focusing on necrotising enterocolitis (NEC) and focal intestinal perforation (FIP).DesignNationwide, population-based registry cohort study.SettingAll 21...

Follow-up visits after pediatric concussion and the factors associated with early follow-up: a population-based study in British Columbia.

To explore the rates and timing of a first follow-up visit for children and adolescents with a concussive injury and to identify factors associated with follow-up timing. A descriptive, correlational design drawing on linked, population-based administrative data of concussed children and adolescents (ages 5-18 years) from the province of British Columbia (BC), Canada. Data were accessed through Population Data BC. Descriptive statistics and binary logistic regression were used to analyze the data. From January 1, 2016 to December 31, 2017, we retrieved 22,601 cases of concussion, of which 19% had an early follow-up visit (N = 4,294), 4.9% had later follow-up (N = 1,107), and 76.1% had no follow-up (N = 17,200). The factors of older age, living in a rural area, higher socioeconomic status, and seeing a specialist physician at an initial concussion diagnosis were more likely to have an early follow-up visit. Early follow-up is important for recovery, but most children and adolescents with a concussion do not receive follow-up in BC.

Phenotypic features, prevalence of KCNJ11-MODY in Chinese patients with early-onset diabetes and a literature review.

Gain-of-function (GOF) variants of KCNJ11 cause neonate diabetes and maturity-onset diabetes of the young (KCNJ11-MODY), while loss-of-function (LOF) variants lead to hyperinsulinemia hypoglycemia and subsequent diabetes. Given the limited research of KCNJ11-MODY, we aimed to analyse its phenotypic features and prevalence in Chinese patients with early-onset type 2 diabetes (EOD). We performed next-generation sequencing on 679 Chinese EOD patients to screen for KCNJ11 exons variants. Bioinformatics prediction and the American College of Medical Genetics and Genomics guidelines was used to determine the pathogenicity and diagnosed KCNJ11-MODY. A literature review was conducted to investigate the phenotypic features of KCNJ11-MODY. We identified six predicted deleterious rare variants in six EOD patients (0.88%). They were classified as uncertain significance (variant of uncertain significance [VUS]), but more common in this EOD cohort than a general Chinese population database, however, without significant difference (53/10,588, 0.50%) (p = .268). Among 80 previously reported patients with KCNJ11-MODY, 23.8% (19/80) carried 9 (32.1%) LOF variants, who had significantly older age at diagnosis, higher birthweight and higher fasting C-peptide compared to patients with GOF variants. Many patients carrying VUS were not correctly diagnosed. Some rare variants of KCNJ11 might contribute to the development of Chinese EOD, although available evidence has not enough power to support them as cause of KCNJ11-MODY. The clinical features of LOF variants were different from GOF variants in KCNJ11-MODY patients. It is necessary to evaluate the pathogenicity of VUS through function experiments.

The Role of Socioeconomic Status in Patients With Cutaneous Melanoma of the Head and Neck.

To determine the effects of socioeconomic status (SES) on cutaneous melanoma of the head and neck. Surveillance Epidemiology and End Results (SEER) Program. We conducted a retrospective analysis of patients diagnosed with cutaneous melanoma of the head and neck from 2006 to 2018, utilizing population-based data including socioeconomic status (SES) assessed by the US-based Yost quintile index. SES quintiles ranged from Group 1 (lowest) to Group 5 (highest). We examined disease severity at diagnosis (stage, Breslow thickness, and spread) and survival outcomes (overall survival, cause-specific survival) to assess the impact of SES. A total of 53,967 melanomas of the head and neck were identified (14,146 females; 39,821 males; 51,890 white; 125 black; 317 other). Group 1 patients had a significantly higher percentage of end-stage disease (stage IV) at diagnosis (n = 101; 3.2% vs. n = 280; 1.9%, respectively) (p < .001), increased Breslow thickness (.80 mm vs .60 mm, respectively) (p < .001), and higher percentage of distant disease (n = 152; 3.6% vs. n = 431; 2.1%, respectively) (p < .001). Group 1 patients experienced a higher death rate from melanoma than group 5 patients (n = 585; 14% vs n = 1,753; 8.6%). Survival increased with SES. When evaluating cutaneous melanoma of the head and neck, low SES is related to more severe disease at diagnosis and worse survival outcomes. Addressing the underlying causes of this relationship could lead to more equitable management and survival outcomes. III Laryngoscope, 2024.

Outcomes of Covid-19 among patients with ischemic heart disease: A propensity matched analysis

BackgroundPrior research has linked cardiovascular diseases with higher COVID-19 mortality and worse hospital outcomes, particularly in severe heart failure. Large population-based data regarding the impact of pre-existing ischemic heart disease (IHD) on COVID-19 outcomes is not well established. ObjectiveTo study the impact of COVID-19 infection on IHD hospital mortality and other outcomes. MethodsThe study included a patient cohort from the 2020 and 2021 National Inpatient Sample (NIS) database. Propensity score matching was used to match the study cohort (COVID-19 with IHD) to controls (COVID-19 without IHD) using a 1:1 matching ratio. The outcomes analyzed were in-hospital mortality, rates of acute kidney injury (AKI), acute myocardial injury (AMI), cardiogenic shock, cardiac arrest, mechanical ventilation, tracheal intubation, pulmonary embolism (PE), ventricular tachycardia (VT), ventricular fibrillation (VF), length of stay (LOS), and total hospitalization charges. ResultsA total of 2,532,652 patients met the inclusion criteria (1,199,008 females [47.3 %), predominantly Caucasian 1,456,203 (57.5 %); mean [SD] age 63, (5.4), including 29,315 (1.1 %) patients with a history of IHD. Following propensity matching, 4,772 COVID-19 patients with and without IHD were matched. IHD patients had higher rates of AMI (adjusted odds ratio (aOR) 3.75, 95 % CI 3.27–4.31, p < 0.001), cardiogenic shock (aOR 2.89, 95 % CI 1.60–5.19, p < 0.001), VT (aOR 3.26, 95 % CI 2.48–4.29, p < 0.001), and VF (aOR 2.23, 95 % CI 1.25–3.99, p < 0.001). The odds ratios of in-hospital mortality, AKI, PE, mechanical ventilation, tracheal intubation, and resource use were not significantly different. ConclusionA history of IHD does not impact COVID-19 mortality but increases the risk of in-hospital cardiac complications.

Perinatal outcomes after a prenatal diagnosis of a fetal copy number variant: a retrospective population-based cohort study

BackgroundThere are no established guidelines for the follow up of infants born after a prenatal diagnosis of a genomic copy number variant (CNV), despite their increased risk of developmental issues. The aims of this study were (i) to determine the perinatal outcomes of fetuses diagnosed with and without a CNV, and (ii) to establish a population-based paediatric cohort for long term developmental follow up.MethodsAn Australian state-wide research database was screened for pregnant individuals who had a prenatal chromosomal microarray (CMA) between 2013–2019 inclusive. Following linkage to laboratory records and clinical referrer details, hospital records were manually reviewed for study eligibility. Eligible participants were mother–child pairs where the pregnancy resulted in a livebirth, the mother was able to provide informed consent in English (did not require a translator) and the mother was the primary caregiver for the child at hospital discharge after birth. Research invitations were sent by registered post at an average of six years after the prenatal diagnostic test. Statistical analysis was performed in Stata17.ResultsOf 1832 prenatal records examined, 1364 (74.5%) mother–child pairs were eligible for recruitment into the follow up cohort. Of the 468 ineligible, 282 (60.3%) had ‘no live pregnancy outcome’ (209 terminations of pregnancy (TOP) and 73 miscarriages, stillbirths, and infant deaths), 157 (33.5%) required a translator, and 29 (6.2%) were excluded for other reasons. TOP rates varied by the type of fetal CNV detected: 49.3% (109/221) for pathogenic CNVs, 18.2% (58/319) for variants of uncertain significance and 3.3% (42/1292) where no clinically significant CNV was reported on CMA. Almost 77% of invitation letters were successfully delivered (1047/1364), and the subsequent participation rate in the follow up cohort was 19.2% (201/1047).ConclusionsThis study provides Australia’s first population-based data on perinatal outcomes following prenatal diagnostic testing with CMA. The relatively high rates of pregnancy loss for those with a prenatal diagnosis of a CNV presented a challenge for establishing a paediatric cohort to examine long term outcomes. Recruiting a mother–child cohort via prenatal ascertainment is a complex and resource-intensive process, but an important step in understanding the impact of a CNV diagnosis in pregnancy and beyond.Trial registrationACTRN12620000446965p; Registered on April 6, 2020.

Trends in Prevalence and Incidence of Epilepsy and Drug-Resistant Epilepsy in Children: A Nationwide Population-Based Study in Korea.

Population-based data on drug-resistant epilepsy (DRE) are lacking. This retrospective study aimed to determine the prevalence and incidence of pediatric epilepsy and DRE in South Korea using health insurance claims data from the Health Insurance Review and Assessment Service (2013-2022). Epilepsy and DRE prevalence and incidence in children <18 years old were estimated over time and by age and sex. Results showed that the age-standardized prevalence and incidence rates of epilepsy increased. The age-standardized prevalence rate of DRE increased, while the age-standardized incidence rate remained unchanged. The standardized prevalence rate of DRE was 0.26 per 1000 persons, and the average standardized incidence rate of DRE was 0.06 per 1000 persons. The prevalence rate of DRE gradually increased with age, with age 0 demonstrating the highest incidence rate. The prevalence of generalized DRE was the highest across all ages, and incidence was the highest at 0 years. Conversely, the incidence of focal DRE did not change with age. Our study revealed a stable incidence rate of DRE in Korea, despite increased prevalence. DRE incidence was the highest in the first year of life, with the generalized type being the most prevalent.

Integrating Sexual and Reproductive Health Equity Into Public Health Goals and Metrics: Comparative Analysis of Healthy People 2030's Approach and a Person-Centered Approach to Contraceptive Access Using Population-Based Data.

The Healthy People initiative is a national effort to lay out public health goals in the United States every decade. In its latest iteration, Healthy People 2030, key goals related to contraception focus on increasing the use of effective birth control (contraceptive methods classified as most or moderately effective for pregnancy prevention) among women at risk of unintended pregnancy. This narrow focus is misaligned with sexual and reproductive health equity, which recognizes that individuals' self-defined contraceptive needs are critical for monitoring contraceptive access and designing policy and programmatic strategies to increase access. We aimed to compare 2 population-level metrics of contraceptive access: a conventional metric, use of contraceptive methods considered most or moderately effective for pregnancy prevention among those considered at risk of unintended pregnancy (approximating the Healthy People 2030 approach), and a person-centered metric, use of preferred contraceptive method among current and prospective contraceptive users. We used nationally representative data collected in 2022 to construct the 2 metrics of contraceptive access; the overall sample included individuals assigned female at birth not using female sterilization or otherwise infecund and who were not pregnant or trying to become pregnant (unweighted N=2760; population estimate: 43.9 million). We conducted a comparative analysis to examine the convergence and divergence of the metrics by examining whether individuals met the inclusion criteria for the denominators of both metrics, neither metric, only the conventional metric, or only the person-centered metric. Comparing the 2 approaches to measuring contraceptive access, we found that 79% of respondents were either included in or excluded from both metrics (reflecting that the metrics converged when individuals were treated the same by both). The remaining 21% represented divergence in the metrics, with an estimated 5.7 million individuals who did not want to use contraception included only in the conventional metric denominator and an estimated 3.5 million individuals who were using or wanted to use contraception but had never had penile-vaginal sex included only in the person-centered metric denominator. Among those included only in the conventional metric, 100% were content nonusers-individuals who were not using contraception, nor did they want to. Among those included only in the person-centered metric, 68% were currently using contraception. Despite their current or desired contraceptive use, these individuals were excluded from the conventional metric because they had never had penile-vaginal sex. Our analysis highlights that a frequently used metric of contraceptive access misses the needs of millions of people by simultaneously including content nonusers and excluding those who are using or want to use contraception who have never had sex. Documenting and quantifying the gap between current approaches to assessing contraceptive access and more person-centered ones helps clearly identify where programmatic and policy efforts should focus going forward.

An Examination of the Psychometric Properties of the Paraphilic Interests and Disorders Scale

ABSTRACT The Paraphilic Interests and Disorders Scale (PIDS) is a self-report measure of DSM-5-TR paraphilic interests and disorders. This study further examined the psychometric properties of the PIDS. In Study 1, using a sample of 2,292 adults in the U.S., we examined comorbidity between paraphilic interests to explore internal consistency, which showed those who reported an interest in one paraphilic interest were significantly more likely to report another paraphilic interest. Convergent validity was assessed by comparing PIDS to another measure (Paraphilia Scale), which showed support for convergent validity for the PIDS interests, as well as most behavioral items. In Study 2, a sample of 91 undergraduate students completed the PIDS at two time points. There was at least substantial test-retest reliability for the interest items except sexual sadism. These findings provide psychometric support for the PIDS which may serve as a useful tool for population-based data on paraphilic interests and disorders.

Beyond breast cancer: role of selective estrogen receptor modulators in reducing systemic malignancies: evidence from population-based data

Background Raloxifene and bazedoxifene are selective estrogen receptor modulators (SERMs) used to prevent and treat osteoporosis in postmenopausal women. Raloxifene is also known for its preventive effect against invasive breast cancer; however, its effect on other cancer types is unclear. This study investigated the incidence of various cancers in osteoporosis patients receiving SERM therapy to determine its association with the risk of developing specific cancer types. Methods This retrospective cohort study examined the association between SERM use and the incidence of cervical, endometrial, ovarian, and colorectal cancers in postmenopausal women using data from the Korean National Health Insurance Service. Propensity score matching ensured group comparability by analyzing 95,513 participants. Cox proportional hazard models were used to calculate the hazard ratios (HRs) and 95% confidence intervals (CIs) to assess the cancer risk associated with SERM therapy, differentiating between the effects of raloxifene and bazedoxifene. Results SERM therapy was associated with a reduced risk of cervical (adjusted HR = 0.47, 95% CI = 0.31–0.71), ovarian (adjusted HR = 0.61, 95% CI = 0.42–0.88), and colorectal cancer (adjusted HR = 0.49, 95% CI = 0.42–0.57). No significant risk reduction was observed for endometrial cancer (adjusted HR = 1.05, 95% CI = 0.70–1.59). A comparison between raloxifene and bazedoxifene revealed no significant differences in their cancer prevention effects. Conclusion SERM therapy administration is associated with a decreased incidence of cervical, ovarian, and colorectal cancers. Notably, the effects of raloxifene and bazedoxifene were consistent. Further investigations are crucial to elucidate the mechanisms underlying these observations and their clinical implications.

Data quality assessment of the Dutch Breast Implant Registry by automated data verification using medical billing data

The Dutch Breast Implant Registry (DBIR) provides real-time population-based data to monitor and improve the quality and safety of breast implants and to trace patients in the event of an (inter)national recall. To serve these main goals, the capture rate and percentage of implants that are actually registered should be known and data should be complete. This study aimed to describe an automated verification process for capture rates and data completeness using medical billing data as the external source. DBIR-data on reconstructive permanent breast implants and tissue expanders (TEs) from 2019 were compared to medical billing data. At the hospital level, the capture rate of DBIR and accuracy of the selected data points were assessed. In total, 2389 implants (1420 patients) were included from 12 participating hospitals (11% of all healthcare institutions registering in DBIR). DBIR had capture rates of 99% to 114% for inserted permanent implants and TEs and 49% for explanted permanent implants and TEs. Among the 9015 data points analyzed in DBIR, 8861 (98%) matched the medical billing data. Mastopexy had the highest matching percentage (100%) and capsulectomy the lowest (86%). This study showed varying capture rates in DBIR depending on the intervention group, indicating that registration of DBIR-data and medical billing codes could be further optimized. Data accuracy was high as only 2% of data points did not correspond to medical billing data. For future data verification, other external data sources could be explored, including sources that enable verification of cosmetic implants.

Cancer risk among people living with Human Immunodeficiency Virus (HIV) in Rwanda from 2007 to 2018.

Assessing the risk of cancer among people living with HIV (PLHIV) in the current era of antiretroviral therapy (ART) is crucial, given their increased susceptibility to many types of cancer and prolonged survival due to ART exposure. Our study aims to compare the association between HIV infection and specific cancer sites in Rwanda. Population-based cancer registry data were used to identify cancer cases in both PLHIV and HIV-negative persons. A probabilistic record linkage approach between the HIV and cancer registries was used to supplement HIV status ascertainment in the cancer registry. Associations between HIV infection and different cancer types were evaluated using unconditional logistic regression models. We performed several sensitivity analyses to assess the robustness of our findings and to evaluate the potential impact of different assumptions on our results. From 2007 to 2018, the cancer registry recorded 17,679 cases, of which 7% were diagnosed among PLHIV. We found significant associations between HIV infection and Kaposi's Sarcoma (KS) (adjusted odds ratio [OR]: 29.1, 95% CI: 23.2-36.6), non-Hodgkin lymphoma (NHL) (1.6, 1.3-2.0), Hodgkin lymphoma (HL) (1.6, 1.1-2.4), cervical (2.3, 2.0-2.7), vulvar (4.0, 2.5-6.5), penile (3.0, 2.0-4.5), and eye cancers (2.2, 1.6-3.0). Men living with HIV had a higher risk of anal cancer (3.1, 1.0-9.5) than men without HIV, but women living with HIV did not have higher risk than women without HIV (1.0, 0.2-4.3). Our study found that in an era of expanded ART coverage in Rwanda, HIV is associated with a broad range of cancers, particularly those linked to viral infections.

Youth mental health care use during the COVID-19 pandemic in Alberta, Canada: an interrupted time series, population-based study

BackgroundDuring the COVID-19 pandemic, youth had rising mental health needs and changes in service accessibility. Our study investigated changes in use of mental health care services for Canadian youth in Alberta before and during the COVID-19 pandemic. We also investigated how youth utilization patterns differed for subgroups based on social factors (i.e., age, gender, socioeconomic status, and geography) previously associated with health care access.MethodsWe used cross-sectional population-based data from Alberta, Canada to understand youth (15–24 year) mental health care use from 2018/19 to 2021/22. We performed interrupted time series design, segmented regression modeling on type of mental health care use (i.e., general physician, psychiatrist, emergency room, and hospitalization) and diagnosis-related use. We also investigated the characteristics of youth who utilized mental health care services and stratified diagnosis-related use patterns by youth subgroups.ResultsThe proportion of youth using mental health care significantly increased from 15.6% in 2018/19 to 18.8% in 2021/22. Mental health care use showed an immediate drop in April 2020 when the COVID-19 pandemic was declared and public health protections were instituted, followed by a steady rise during the next 2 years. An increase was significant for general physician and psychiatrist visits. Most individual diagnoses included in this study showed significant increasing trends during the pandemic (i.e., anxiety, adjustment, ADHD, schizophrenia, and self-harm), with substance use showing an overall decrease. Mortality rates greatly increased for youth being seen for mental health reasons from 71 per 100,000 youth in 2018/19 to 163 per 100,000 in 2021/22. In addition, there were clear shifts over time in the characteristics of youth using mental health care services. Specifically, there was increased utilization for women/girls compared to men/boys and for youth from wealthier neighborhoods. Increases over time in the utilization of services for self-harm were limited to younger youth (15–16 year).ConclusionsThe study provides evidence of shifts in mental health care use during the COVID-19 pandemic. Findings can be used to plan for ongoing mental health needs of youth, future pandemic responses, and other public health emergencies.

Frequent gene mutations and the correlations with clinicopathological features in clear cell renal cell carcinoma: preliminary study based on Chinese population and TCGA database

BackgroundLarge-scale sequencing plays important roles in revealing the genomic map of ccRCC and predicting prognosis and therapeutic response to targeted drugs. However, the relevant clinical data is still sparse in Chinese population.MethodsFresh tumor specimens were collected from 66 Chinese ccRCC patients, then the genomic RNAs were subjected to whole transcriptome sequencing (WTS). We comprehensively analyzed the frequently mutated genes from our hospital’s cohort as well as TCGA-KIRC cohort.ResultsVHL gene is the most frequently mutated gene in ccRCC. In our cohort, BAP1 and PTEN are significantly associated with a higher tumor grade and DNM2 is significantly associated with a lower tumor grade. The mutant type (MT) groups of BAP1 or PTEN, BAP1 or SETD2, BAP1 or TP53, BAP1 or MTOR, BAP1 or FAT1 and BAP1 or AR had a significantly correlation with higher tumor grade in our cohort. Moreover, we identified HMCN1 was a hub mutant gene which was closely related to worse prognosis and may enhance anti-tumor immune responses.ConclusionsIn this preliminary research, we comprehensively analyzed the frequently mutated genes in the Chinese population and TCGA database, which may bring new insights to the diagnosis and medical treatment of ccRCC.

Variability and forensic efficiency of 12 X-STR markers in Namibian populations.

STR loci localized on the X chromosome provide information additional to the autosomal markers routinely analyzed in forensic genetics, integrating genetic systems as Y-STRs and mitochondrial DNA in the investigation of complex kinship scenarios and mass disaster cases.In this study we genotyped 12 X-STR loci in 251 male samples from four populations of Namibia in southern Africa using the Investigator Argus X-12 kit (Qiagen, Hilden, Germany). Forensic efficiency parameters indicated high power of discrimination in the considered populations. As part of our investigation, we highlighted partial linkage associations between loci within known linkage groups (LGs) and identified several occurrences of previously unreported out-of-ladder (OL) alleles.Genetic distances between the Namibian populations here investigated and other African (Eritrea, Ethiopia, Somalia, Guinea, Cape Verde) and non-African (Germany, China, Philippines) populations using loci grouped in LGs mirrored their biogeographical distribution differently for each linkage group. Haplotype sharing within each LG revealed a high degree of population-specific types, hinting to the potential of these markers for ancestry applications.These results highlight the importance to produce specific and freely available population databases especially for multi-ethnic countries. This novel dataset is expected to be of interest for population studies that need an accessible reference dataset of African regions not currently well represented, as well as possible relevance for forensic applications focusing on the biogeographic origin of samples.

Secondary Stroke Prevention in People With Schizophrenia.

People with schizophrenia are less likely than those without to be treated for cardiovascular disease. We aimed to evaluate the association between schizophrenia and secondary preventive care after ischemic stroke. In this retrospective cohort study, we used linked population-based administrative data to identify adults who survived 1 year after ischemic stroke hospitalization in Ontario, Canada between 2004 and 2017. Outcomes were screening, treatment, and control of risk factors, and receipt of outpatient physician services. We used modified Poisson regression to model the relative risk of each outcome among people with and without schizophrenia, adjusting for age and other factors. Among 81 163 people with ischemic stroke, 844 (1.04%) had schizophrenia. Schizophrenia was associated with lower rates of screening for hyperlipidemia (60.5% versus 66.0%, adjusted relative risk [aRR] 0.88 [95% CI, 0.84-0.93]) and diabetes (69.4% versus 73.9%, aRR 0.93 [95% CI, 0.89-0.97]), prescription of antihypertensive medications (91.2% versus 94.7%, aRR 0.96 [95% CI, 0.93-0.99]), achievement of target lipid levels (low-density lipoprotein <2 mmol/L) (30.6% versus 34.6%, aRR 0.86 [95% CI, 0.78-0.96]), and outpatient specialist visits (55.3% versus 67.8%, aRR 0.78 [95% CI, 0.74-0.83]) or primary care physician visits (94.5% versus 98.5%; aRR 0.96 [95% CI, 0.95-0.98]) within 1 year. There were no differences in prescription of antilipemic, antiglycemic, or anticoagulant medications, or in achievement of target hemoglobin A1c ≤7%. People with stroke and schizophrenia are less likely than those without to receive secondary preventive care. This may inform interventions to improve poststroke care and outcomes in those with schizophrenia.

Urothelial cancer: state of art in Ukraine and improvement pathways.

This study aims to assess the effectiveness of urothelial cancer treatment in Ukraine, utilizing population-based data from the National Cancer Registry. The primary goal is to evaluate trends and approaches to therapy, with a focus on overall survival rates in patients with urothelial tumors. A retrospective cross-sectional analysis was conducted based on the National Cancer Registry, involving 12698 patients (2008-2020) with urothelial tumors of the upper urinary tract (UTUC) and bladder cancer (BC) who underwent surgical treatment. Demographic indicators, surgical interventions, complications, and survival rates were analyzed. The average age for all patients was 70 years. The number of patients undergoing radical treatment was 1820 (15%) among BC and 573 (59%) among UTUC. The 30-day readmission rate was low for both, with a slightly higher preference for UTUC (2.3 vs. 4.6%). Whereas grade III or higher Cl-Dindo complications were seen in only 0.2% of cases. Notable findings include low frequency of neoadjuvant (7%) and adjuvant chemotherapy (28%) among patients with invasive urothelial carcinomas. Median eGFR for invasive UTUC before and after surgery was 63.2 and 51.4ml/min, respectively (P=0.00054). The directly opposite trend was seen in BC-61.2 and 68.7ml/min, respectively (P=0.0026).For BC, the overall survival rates by stages were: I-73%, II-49%, III-18%, and IV-11% (χ2=1807.207; P=0.000001). As for UTUC, the 5-year overall survival rates corresponded to the literature data, but there was a pronounced negative trend towards a decrease in this indicator after a 10-year period for all stages (χ2=146.298; P=0.000003). The study emphasizes the importance of effective systemic treatments, adherence to treatment guidelines, and the need for multidisciplinary consultations among Ukrainian patients with urothelial cancer.

Sirt5 regulates chondrocyte metabolism and osteoarthritis development through protein lysine malonylation.

Chondrocyte metabolic dysfunction plays an important role in osteoarthritis (OA) development during aging and obesity. Protein post-translational modifications (PTMs) have recently emerged as an important regulator of cellular metabolism. We aim to study one type of PTM, lysine malonylation (MaK) and its regulator Sirt5 in OA development. Human and mouse cartilage tissues were used to measure SIRT5 and MaK levels. Both systemic and cartilage-specific conditional knockout mouse models were subject to high-fat diet (HFD) treatment to induce obesity and OA. Proteomics analysis was performed in Sirt5 -/- and WT chondrocytes. SIRT5 mutation was identified in the Utah Population Database (UPDB). We found that SIRT5 decreases while MAK increases in the cartilage during aging. A combination of Sirt5 deficiency and obesity exacerbates joint degeneration in a sex dependent manner in mice. We further delineate the malonylome in chondrocytes, pinpointing MaK's predominant impact on various metabolic pathways such as carbon metabolism and glycolysis. Lastly, we identified a rare coding mutation in SIRT5 that dominantly segregates in a family with OA. The mutation results in substitution of an evolutionally invariant phenylalanine (Phe-F) to leucine (Leu-L) (F101L) in the catalytic domain. The mutant protein results in higher MaK level and decreased expression of cartilage ECM genes and upregulation of inflammation associated genes. We found that Sirt5 mediated MaK is an important regulator of chondrocyte cellular metabolism and dysregulation of Sirt5-MaK could be an important mechanism underlying aging and obesity associated OA development.