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Nevin Manimala Statistics

Blood pressure and its associations in 554 children and young people with CAH

Eur J Endocrinol. 2025 Apr 4:lvaf060. doi: 10.1093/ejendo/lvaf060. Online ahead of print.

ABSTRACT

BACKGROUND: Congenital Adrenal Hyperplasia (CAH) due to 21-hydroxylase deficiency (21OHD) affects approximately 1 in 15,000 individuals. We leveraged the power of multicentre registry data to assess the trend and predictors of blood pressure (BP) within children and young persons with 21OHD to inform monitoring strategies.

METHOD: Data from the International CAH Registry in patients younger than 20 years was compared to normative values. Values of BP were modelled to create reference curves, multiple change point analysis applied to quantify the difference with normative data. Covariate adjustment was informed by a directed acyclic graph, prior to joint outcome regression modelling to accurately assess predictors of BP.

RESULTS: A total of 6436 visits within 554 patients (52.5% females) showed BP-Standard deviation scores (SDS) were higher at younger ages. Patients under five years had systolic BP-SDS of 1.6 (Q1:0.6-Q3:2.7) decreasing to 1.0 (Q1:0.2-Q3:1.8) over five years, equating to 31.0% over the 95th centile decreasing to 15.0%. Higher doses of fludrocortisone were associated with a small increase in systolic BP equivalent to 1.2mmHg with every 100 micrograms extra fludrocortisone. Renin of 100µU/ml was associated with 4.6mmHg lower systolic BP than a renin of 1µU/ml, higher 17OH-progesterone and androstenedione also predicted lower systolic and diastolic BP (p<0.05).

CONCLUSION: Higher BP in children with 21OHD is common and particularly pronounced at a younger age, but may not be attributable to excessive mineralocorticoid replacement. There is a need to improve our understanding of the determinants of this raised BP as well as its long-term effects.

PMID:40184493 | DOI:10.1093/ejendo/lvaf060

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Nevin Manimala Statistics

Causal associations between premature ovarian insufficiency and cardiovascular diseases: a Mendelian randomization study

Gynecol Endocrinol. 2025 Dec;41(1):2487498. doi: 10.1080/09513590.2025.2487498. Epub 2025 Apr 4.

ABSTRACT

To date, there remains a paucity of prospective studies examining the association between premature ovarian insufficiency (POI) and cardiovascular diseases (CVD). The objective of this study was to investigate the potential association between POI and CVD utilizing the method of Mendelian randomization (MR). MR analyses utilized summary statistics from the most extensive genome-wide association studies (GWAS) on POI and CVD extracted from European ancestry cohorts and the FinnGen biobank. The inverse variance-weighted (IVW) method was the primary MR analysis technique. Supplementary analyses were performed using MR-Robust Adjusted Profile Score (MR-RAPS). Cochran’s Q statistic, MR-Egger, and weighted median MR models were employed to further assess heterogeneity and horizontal pleiotropy. Causal effects of POI on coronary heart disease (odds ratio [OR] = 1.048, 95% confidence interval [CI]: 1.006-1.091; p = 0.023)] and ischemic stroke (OR = 1.010, 95% CI: 1.000-1.020; p = 0.0498) were found. However, we did not observe a significant correlation between POI and hypertension (OR = 0.999, 95% CI: 0.994-1.004, p = 0.691), heart failure (OR = 1.009, 95% CI: 0.999-1.020, p = 0.0725), atrial fibrillation (OR = 0.995, 95% CI: 0.986-1.004, p = 0.3035), and myocardial infarction (OR = 1.002, 95% CI: 0.991-1.013, p = 0.7061). POI was causally associated with coronary heart disease and ischemic stroke, with no apparent impact on hypertension, heart failure, atrial fibrillation, or myocardial infarction. The causal relationship between POI and CVD underscores the imperative for proactive cardiovascular risk management in individuals with POI.

PMID:40184471 | DOI:10.1080/09513590.2025.2487498

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Nevin Manimala Statistics

Validity and reliability of the Dietary Sodium Restriction Questionnaire in peritoneal dialysis patients

PLoS One. 2025 Apr 4;20(4):e0321177. doi: 10.1371/journal.pone.0321177. eCollection 2025.

ABSTRACT

OBJECTIVE: The Chinese version of Dietary Sodium Restriction Questionnaire (DSRQ) was adapted to evaluate its reliability and validity for measuring adherence to a sodium-restricted diet in peritoneal dialysis (PD) patients.

METHODS: Specific items related to peritoneal dialysis were added to create a PD version of the DSRQ (PD-DSRQ), which was administered to 135 patients undergoing PD. Item analysis was performed using the critical ratio and homogeneity tests. The reliability of the questionnaire was determined by assessing the internal consistency. Content validity was evaluated using the expert evaluation method, and construct validity was assessed via exploratory and confirmatory factor analyses.

RESULTS: The item analysis revealed correlation coefficients (R-values) ranging from 0.311 to 0.745 for each item, with statistically significant differences between the high and low subgroups for all items. The Cronbach’s α coefficients for the overall PD-DSRQ and the attitude, subjective norm, and perceived behavioral control subscales were 0.805, 0.892, 0.794, and 0.889, respectively. The item-level content validity index ranged from 0.83 to 1.00, and the scale-level content validity index/universal agreement was 0.9894. Exploratory factor analysis identified a three-factor structure consistent with the original DSRQ, except for Question 18. The three factors had eigenvalues of 5.302, 4.179, and 1.290, which explained 64.32% of the variance. The average variance extracted for each dimension was 0.5777, 0.5654, and 0.5259, and the composite reliability values were 0.8864, 0.7956, and 0.8802, respectively, demonstrating good convergent and discriminant validity.

CONCLUSION: The PD-DSRQ encompasses general information and three dimensions: attitude, subjective norms, and perceived behavioral control. The questionnaire demonstrated strong reliability and validity, making it a reliable tool for assessing adherence to sodium-restricted diets in patients undergoing PD.

PMID:40184402 | DOI:10.1371/journal.pone.0321177

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Nevin Manimala Statistics

Predictors of youth unemployment duration and impact evaluation of job creation program in East Gojjam Zone

PLoS One. 2025 Apr 4;20(4):e0320795. doi: 10.1371/journal.pone.0320795. eCollection 2025.

ABSTRACT

Youth unemployment in the East Gojjam Zone is a critical issue. This study focuses on identifying the factors that influence unemployment duration and evaluating the impact of job creation programs on the well-being of youth in this region. We employed Cox regression to analyze the determinants of unemployment duration and used propensity score matching to assess the welfare effects of job creation initiatives. Our multistage cluster sampling revealed a youth unemployment rate of 33.3% (95% CI: 27.3-39.3). Over half of the unemployed youth transitioned to employment within four years, with 25% securing jobs within two years. Participation in job creation programs led to an average earnings increase of 1,069.716 birr, though retention in these programs was low at 49%. The findings reveal a connection between prolonged unemployment, skill mismatches, financial constraints, limited work experience, weak social networks, low income, and a preference for public-sector employment. To effectively address these challenges, interventions must focus on improving job accessibility, aligning vocational training with labor market needs, promoting financial inclusion, and enhancing social support systems.

PMID:40184397 | DOI:10.1371/journal.pone.0320795

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Nevin Manimala Statistics

Respiratory health and chronic disease risks in residents of agricultural areas in Chiang Mai, Northern Thailand

PLoS One. 2025 Apr 4;20(4):e0321471. doi: 10.1371/journal.pone.0321471. eCollection 2025.

ABSTRACT

Respiratory health and chronic disease risks are prevalent concerns in agricultural communities in Northern Thailand, prompting an assessment of these issues among residents in Chiang Mai. A cross-sectional study involving 145 participants was conducted in San Pa Tong District from October to December 2023, utilizing structured questionnaires and spirometry tests to evaluate lung function and chronic health disease risk. The study found that education and income significantly impacted lung function, with better FVC% and FEV1/FVC% predicted values observed in those with primary education and lower income. Lower DM risk was associated with better lung function (P = 0.023). Logistic regression showed a significant increase in lung function impairment among participants with high to very high DM risk (aOR 9.06, p < 0.05). High CV and COPD risk levels also correlated with lung function impairment, though not all results were statistically significant. The results emphasize the intricate interplay between socioeconomic factors, chronic disease risks, and lung function, advocating for public health interventions that holistically address population respiratory and metabolic health.

PMID:40184396 | DOI:10.1371/journal.pone.0321471

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Nevin Manimala Statistics

Supervised Machine Learning and Physics Machine Learning approach for prediction of peak temperature distribution in Additive Friction Stir Deposition of Aluminium Alloy

PLoS One. 2025 Apr 4;20(4):e0309751. doi: 10.1371/journal.pone.0309751. eCollection 2025.

ABSTRACT

Additive friction stir deposition (AFSD) is a novel solid-state additive manufacturing technique that circumvents issues of porosity, cracking, and properties anisotropy that plague traditional powder bed fusion and directed energy deposition approaches. However, correlations between process parameters, thermal profiles, and resulting microstructure in AFSD still need to be better understood. This hinders process optimization for properties. This work employs a framework combining supervised machine learning (SML) and physics-informed neural networks (PINNs) to predict peak temperature distribution in AFSD from process parameters. Eight regression algorithms were implemented for SML modeling, while four PINNs leveraged governing equations for transport, wave propagation, heat transfer, and quantum mechanics. Across multiple statistical measures, ensemble techniques like gradient boosting proved superior for SML, with the lowest MSE of 165.78. The integrated ML approach was also applied to classify deposition quality from process factors, with logistic regression delivering robust accuracy. By fusing data-driven learning and fundamental physics, this dual methodology provides comprehensive insights into tailoring microstructure through thermal management in AFSD. The work demonstrates the power of bridging statistical and physics-based modeling for elucidating AM process-property relationships.

PMID:40184386 | DOI:10.1371/journal.pone.0309751

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Nevin Manimala Statistics

Do Exercise Pattern and Intensity Influence Affective and Enjoyment Responses in Active Adults? A Secondary Analysis

Res Q Exerc Sport. 2025 Apr 4:1-10. doi: 10.1080/02701367.2025.2471880. Online ahead of print.

ABSTRACT

The purpose of the present study was to compare the ratings of perceived exertion (RPE), affective (Feeling Scale), and remembered enjoyment (Physical Activity Enjoyment Scale) responses following different exercise intensities/patterns and to investigate possible associations with physiological parameters in active adults. In a randomized crossover trial, 16 active adults (29.9 ± 3.2 years; 8 males/8 females) performed three different conditions: moderate continuous exercise (MCE) at 70% lactate threshold (LT), heavy continuous exercise (HCE) at 10% of the difference between LT and VO2 peak, and heavy interval exercise (HIE) wherein intensity matched HCE but performed as 1-minute on:off with stationary rest in between. RPE (CR10) and affect were evaluated during exercise while remembered enjoyment was assessed at the end of each exercise session. Average RPE was significantly different (p = .001; ηp2 = .744) between all three exercise modalities (MCE = 2.6 ± 0.8, HCE = 5.1 ± 1.0; HIE = 3.5 ± 0.9; p ≤.001). Average affect during exercise was also significantly different (p = .001; ηp2 = .427) with post hoc testing revealing lower affect for HCE compared to MCE (p = .002) and HIE (p = .008). Similar results were observed for affect nadir (lowest affect during exercise; MCE = 3.1 ± 1.3; HCE = 1.2 ± 1.7; HIE = 2.4 ± 1.6; p = .001; ηp2 = .470). Remembered enjoyment was not statistically different between modalities (MCE = 98 ± 18; HCE = 96 ± 17; HIE = 100 ± 16; p = .468; ηp2 = .049), but more people preferred HCE (10/16; 62.5%) compared with both HIE (4/16; 25%) and MCE (2/16; 12.5%) (p = .039): Despite the higher average RPE and lower affect during HCE, no difference was observed for remembered exercise enjoyment, and active individuals seem to prefer this exercise modality compared with HIE or MCE.

PMID:40184203 | DOI:10.1080/02701367.2025.2471880

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Nevin Manimala Statistics

Epidemiological Characteristics of Intestinal Protozoal Infections and Their Risk Factors in Malaysia: Systematic Review and Meta-Analysis Protocol

JMIR Res Protoc. 2025 Apr 4;14:e66350. doi: 10.2196/66350.

ABSTRACT

BACKGROUND: Intestinal protozoal infections caused by Entamoeba histolytica, Giardia lamblia, and Cryptosporidium parvum are prevalent in Malaysia. They cause severe diarrheal diseases with symptoms such as bloody stools, abdominal pain, stomach discomfort, and bloating. These infection outbreaks have been reported in diverse socioeconomic backgrounds and geographical regions usually during the rainy season or in areas with poor sanitation. Despite the importance of these infections, data on its overall prevalence, risk factors, and diagnostic methods remain limited.

OBJECTIVE: The aim of this study is to systematically review and synthesize evidence on the risk factors, prevalence, and detection methods for intestinal protozoal infections in Malaysia, offering insights that are applicable to other tropical and low-income regions.

METHODS: Studies on intestinal protozoal infections among Malaysian patients published after January 2010 up to November 2024 will be eligible for inclusion. The eligibility criteria include studies investigating infections caused by E. histolytica, G. lamblia, and C. parvum using validated diagnostic methods such as microscopy, molecular techniques, or immunoassays. Case reports, reviews, and studies without original data will be excluded. Comprehensive database searches will be conducted in PubMed/MEDLINE, Scopus, ProQuest, Web of Science, Google Scholar, and the Cochrane Library. The reference lists of selected papers are also checked. A standardized data extraction form will be used to record study characteristics, outcomes, and associated variables. Risk of bias will be assessed using the Joanna Briggs Institute tools and Newcastle-Ottawa Scale approach. Data synthesis will utilize a random effects model to estimate pooled prevalence and identify risk factors associated with these infections. Subgroup analyses will examine variations by geographic region and diagnostic method. Statistical heterogeneity will be assessed using I2 statistic and meta-regression. Publication bias will be assessed using Egger and Begg funnel plot test. The results are reported in accordance with PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines.

RESULTS: This systematic review was funded in June 2024. Database searches were started in July 2024, and we identified 1652 papers as of December 2024 for screening. Completion of study screening is anticipated by May 2025, with data extraction and analysis expected to conclude by December 2025.

CONCLUSIONS: Our study will address critical knowledge gaps in the epidemiology and risk factors of intestinal protozoal infections in Malaysia. Study limitations include potential bias in study selection, heterogeneity in diagnostic methods, and differences in the reporting quality of the included studies. Our findings will provide valuable insights into the prevalence of these infections, the associated risk factors, and the diagnostic techniques employed, which should strengthen public health measures, improve diagnostic procedures, and guide future research to reduce the prevalence of intestinal protozoal infections in Malaysia.

TRIAL REGISTRATION: PROSPERO (International Prospective Registry of Systematic Reviews) registration CRD42023456199; https://www.crd.york.ac.uk/PROSPERO/view/CRD42023456199.

INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID): DERR1-10.2196/66350.

PMID:40184188 | DOI:10.2196/66350

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Nevin Manimala Statistics

Changes in Physical Activity, Heart Rate, and Sleep Measured by Activity Trackers During the COVID-19 Pandemic Across 34 Countries: Retrospective Analysis

J Med Internet Res. 2025 Apr 4;27:e68199. doi: 10.2196/68199.

ABSTRACT

BACKGROUND: The COVID-19 pandemic disrupted behavior within populations, affecting physical activity (PA), heart rate (HR), and sleep characteristics in particular. Activity trackers provide unique insights into these changes, enabling large-scale, real-time monitoring.

OBJECTIVE: This study aims to analyze the associations between the features of the COVID-19 pandemic worldwide and PA, HR, and sleep parameters, using data collected from activity trackers over a 3-year period.

METHODS: We performed a retrospective analysis using anonymized data collected from the 208,818 users of Withings Steel HR activity trackers, spanning 34 countries, over a 3-year period from January 2019 to March 2022. Key metrics analyzed included daily step counts, average heart rate, and sleep duration. The statistical methods used included descriptive analyses, time-trend analysis, and mixed models to evaluate the impact of restriction measures, controlling for potential confounders such as sex, age, and seasonal variations.

RESULTS: We detected a significant decrease in PA, with a 12.3% reduction in daily step count (from 5802 to 5082 steps/d) over the 3 years. The proportion of sedentary individuals increased from 38% (n=14,177) in 2019 to 52% (n=19,510) in 2020 and remained elevated at 51% (n=18,972) in 2022, while the proportion of active individuals dropped from 8% (n=2857) to 6% (n=2352) in 2020 before returning to 8% (n=2877) in 2022. In 2022, the global population had not returned to prepandemic PA levels, with a noticeable persistence of inactivity. During lockdowns, HR decreased by 1.5%, which was associated with lower activity levels. Sleep duration increased during restrictions, particularly in the countries with the most severe lockdowns (eg, an increase of 15 min in countries with stringent measures compared to 5 min in less restricted regions).

CONCLUSIONS: The sustained decrease in PA and its physiological consequences highlight the need for public health strategies to mitigate the long-term effects of the measures taken during the pandemic. Despite the gradual lifting of restrictions, PA levels have not fully recovered, with lasting implications for global health. If similar circumstances arise in the future, priority should be given to measures for effectively increasing PA to counter the increase in sedentary behavior, mitigate health risks, and prevent the rise of chronic diseases.

PMID:40184182 | DOI:10.2196/68199

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Nevin Manimala Statistics

Early postoperative seizures in patients with adult-type diffuse gliomas: Incidence, risk factors, and clinical outcomes

Epileptic Disord. 2025 Apr 4. doi: 10.1002/epd2.70019. Online ahead of print.

ABSTRACT

OBJECTIVE: The current study aimed to clarify the representation of early postoperative seizures (EPSs) in different glioma subtypes under the 2021 WHO classification, explore the risk factors for EPSs in glioma patients, and investigate the clinical impact of EPSs on seizure and survival outcomes.

METHODS: Data from 78 patients were analyzed. The differences in clinical-pathological features between patients with EPSs and those without were compared using appropriate statistical methods. Multivariate binary logistic regression analysis was subsequently conducted to explore potential risk factors for EPSs. Finally, the Kaplan-Meier method was applied to analyze the correlation of EPSs with progression-free survival and overall survival.

RESULTS: Early postoperative seizures occurred in 17 patients (21.8%). The incidence of EPSs was highest in patients with oligodendroglioma, IDH-mutant, and 1p/19q-codeleted (25.7%), followed by astrocytoma, IDH-mutant (20.8%), and glioblastoma, IDH-wildtype (12.5%). An extent of resection (EOR) of less than 92.24% was identified as the only independent predictor for EPSs (Odds ratio 8.490, 95% confidence interval 1.873-38.488, p = .006) through multivariate regression analysis. In addition, EPSs showed no significant impact on late postoperative seizure occurrence and survival outcome.

SIGNIFICANCE: In glioma patients, EPSs are considered neurological disorders induced by surgery-related factors rather than a tumor-related mechanism. EPSs are more prone to occur in patients with an EOR of less than 92.24%, which can contribute to improving individualized glioma management.

PMID:40184162 | DOI:10.1002/epd2.70019