Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 58 for “"Subgroup analysis"”.
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The role and essence of pilot trials and subgroup analysis in cardiovascular research: the IMPI trial experience
… definitive trials. It then focuses on how subgroup analysis can be used as an essential statistical tool for fully understanding clinical trial results and can be used to unearth non-apparent results in RCT. In the thesis, we highlight the need for accurate, systematic and complete …
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Spectrum of coagulation profiles in severely injured patients: A subgroup analysis from the FIRST ( Fluids in Resuscitation of Severe Trauma) trial
Background: Uncontrolled bleeding accounts for the majority of preventable deaths in the severely injured in both the civilian and military settings. Trauma induced coagulopathy (TIC) is now widely accepted as a major contributing factor to worsening bleeding in these patients. A quarter of severe …
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An Expandable Stage-Based Machine Learning and Statistical Pipeline for Detecting Adverse Drug Reaction Risks on Complex Multidimensional Datasets
… framework tailored to demographic and clinical subgroups. The pipeline begins with a drug selection stage, enabling prioritization of relevant drug exposures using Random Forest classifiers or chi-square tests. Subsequent stages support both univariable and multivariable subgroup analysis, where …
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Optimization of Signal-Detection Methods in Novel Databases: a Focus on Direct-Acting Antivirals
… of SDAs. It will assess the effects of subgroup analysis on SDAs and develop predictive models using FAERS data; and evaluate the association of DAA exposure and identified potential signals in a real-world population of commercially insured patients form the Merative MarketScan Research …
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The Effect of Public Pre-Kindergarten Attendance on First Grade Reading and Social Achievement: A District Level Analysis
… were run on literacy and behavior measures. Subgroup analysis was performed to test the effect of Pre-K attendance on first grade behavior across different levels of school quality experienced in kindergarten.</p> <p>Literacy measures in first grade included the <em>Phonological Awareness …
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PROPHYLACTIC CLIP PLACEMENT DURING POLYPECTOMY DOES NOT REDUCE THE RISK OF DELAYED BLEEDING: A SYSTEMATIC REVIEW AND META-ANALYSIS
… met the inclusion/exclusion criteria. The final analysis included 10,910 polypectomies in 13,308 patients. The rate of delayed post polypectomy bleeding was 1.27% with prophylactic clips placement vs. 0.97% without placement of clips (OR = 0.94; 95% CI: 0.4-2.24; p = 0.9; I2 71%). With inclusion …
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Game-based Robotic Training for Upper Limb Function after Stroke
… Cochrane recommendations. We performed a meta-analysis to pool the results of trials that investigated the effectiveness of GBRT. We found that GBRT, combined with CT, is superior to CT alone in improving UL function after a stroke. We also performed a subgroup analysis to investigate if types …
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The Classroom Communication Resource (CCR) intervention to change grade 7 peers' attitudes towards children who stutter (CWS) in the Western Cape: a randomised controlled trial
… Pressure (SP) and Verbal Interaction (VI). The subgroup objective was to determine the primary objective between and across lower and higher school quintile clusters. Method: A cluster RCT was conducted. Participants in grade 7, aged 11 years and older, were randomly assigned to control and …
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Work schedule stress and wellness in female air cabin attendants
… obtained from the questionnaire. The qualitative analysis, based on the grounded theory approach, formed the backbone of the research. The quantitative data were subjected to correlational analysis, supplemented by subgroup analysis to assess moderator effects. Work Schedule Stress was …
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Variations in Educational Attainment Among DIfferent Latino Subgroups
… attainment among the different Latino subgroups. This study aims to discover if these propositions are true by analyzing the High School and Beyond data set available through the Inter-University Consortium of Political and Social Research. Findings show that the aggregate, Hispanics, …
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Food Insecurity’s Relationship with Children’s BMI and General Anesthesia
… (p=0.660) or FI and GA need (p=0.089). However, subgroup analysis suggested a potential association between FI and BMI, particularly among Black participants. Conclusions: This study found no significant association between FI and BMI or need for GA. Nonetheless, 93% of the population experienced …
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Student-College Match and Bachelor's Degree Completion
… – compared to matched students – are 19% higher. Subgroup analysis indicates variance by socioeconomic status and race/ethnicity, but likelihood ratio tests provide evidence that such differences are not statistically significant, demonstrating that the relationship between student-college match …
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Cardiovascular Risk Factors Predict the Spatial Distribution of White Matter Hyperintensity
… the MNI-152 standard template. For univariate analysis, each risk factor group was compared to the non-risk factor group. Voxels in which WMH frequency was significantly higher (p<0.05) in the risk factor group were mapped. Multivariate analysis consisted of subgroup analysis to minimize …
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Effects of a smart phone application on breast self-examination: a feasibility study
… from 28 to 32 (62.2% to 71.1%, p = 0.503). In subgroup analysis (age < 30 years), breast self-examination significantly increased from 8 to 18 (36.4% to 81.8%, p = 0.002). The breast self-examination at proper time also significantly increased from 1 to 15 (2.2% to 33.3%, p < 0.001). …
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Clinical outcome and Predictive factors of Coronary aneurysm after Percutaneous Coronary Intervention
… cardiovascular and all-cause mortality. In the subgroup analysis, there are no events of cardiac death but stent thrombosis and myocardial infarction were developed more frequently in CAA group compared with PSS group.
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Biomechanical Analysis of Human Coronary Atherosclerotic Plaques in Response to Pharmacotherapy, and in Predicting Adverse Clinical Events
… in plaque risk prediction was assessed through a subgroup analysis of the PROSPECT (A Prospective Natural-History Study of Coronary Atherosclerosis) study, with results suggesting that incorporation of ESS, ESS gradient, and PSS heterogeneity can improve the capability of VH-IVUS to identify …
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Electronic nicotine delivery systems use and advertising among adolescent americans
… gender, school level, ethnicity, and race. A subgroup analysis of age was included to assess how use of ENDS by advertisement exposure may differ between three distinct age ranges (11–13, 14–15, and 16–18). The findings indicate a significant association between exposure to e-cigarette …
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Effective schools research : a meta-analysis of progress monitoring and the impact on student achievement
This limited meta-analysis on the Effective Schools Research topic of progress monitoring included 11 studies with 13 effect sizes. Twelve of the effect sizes focused on students at the elementary level and one focused on middle school, of the 11 studies, 6 used a randomized controlled study as …
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Impact of Offender Sex Across Legal Decision-Making Intercepts in Cases of Domestic Violence: a Meta-Analysis
… arrest males or females on average; however, a subgroup analysis of studies controlling for offender weapon use and victim injury demonstrated police are more likely to arrest males than females. On average, police are more likely to dually, rather than singly, arrest females than males. …
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Prehospital Delay, Procrastination and Personality in Patients with Acute Coronary Syndrome
… and review of the medical record. Data analysis included correlations between specific personality factors (neuroticism and conscientiousness), procrastination and prehospital delay. Data analysis also included subgroup analysis across demographic variables utilizing analyses of variance …
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