Results 21 to 30 of about 36,817,910 (309)
Sample size estimation for case‐crossover studies
Statistics in Medicine, 2018 Case‐crossover study designs are observational studies used to assess postmarket safety of medical products (eg, vaccines or drugs). As a case‐crossover study is self‐controlled, its advantages include better control for confounding because the design controls for any time‐invariant measured and unmeasured confounding and potentially greater ...
Sai Dharmarajan +2 more
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Environment International, 2022 Background: The acute effects of exposure to ambient particulate matter with an aerodynamic diameter ≤1 μm (PM1) on cardiovascular disease (CVD) mortality remain unclear.
Ruijun Xu +9 more
doaj +1 more source
Journal of Epidemiology, 2016 Background: Epidemiology studies have shown a consistently increased risk of acute myocardial infarction (AMI) correlated with particulate matter (PM) exposure. However, little is known about the association with specific AMI subtypes. In this work, we
Qian Zhang
doaj +1 more source
Frontiers in Pharmacology, 2019 Background and Objective: It has been suggested to avoid cilostazol, the first-line therapy for peripheral arterial disease, in patients with congestive heart failure (HF). The objective of this study was to evaluate the risk of hospitalization for heart
Cho-Kai Wu +7 more
doaj +1 more source
Triggers for Preeclampsia Onset: a Case‐Crossover Study
Paediatric and Perinatal Epidemiology, 2016 AbstractBackgroundRisk factors for preeclampsia are well established, whereas, the triggers associated with timing of preeclampsia onset are not. The aim of this study was to establish whether recent infection or other triggers were associated with timing of preeclampsia onset.MethodsWe used a case‐crossover design with preeclampsia cases serving as ...
Jane B, Ford +5 more
openaire +3 more sources
TH Open, 2023 Background Surgery is a major transient risk factor for venous thromboembolism (VTE). However, the impact of major surgery as a VTE trigger has been scarcely investigated using a case-crossover design.
Dana Meknas +3 more
doaj +1 more source
Environmental Health and Preventive MedicineBackground: Children’s respiratory health demonstrates particular sensitivity to air pollution. Existing evidence investigating the association between short-term ozone (O3) exposure and childhood pneumonia remains insufficient and inconsistent ...
Huan Wang +7 more
doaj +1 more source
A rigorous evaluation of crossover and mutation in genetic programming [PDF]
, 2009 The role of crossover and mutation in Genetic Programming (GP) has been the subject of much debate since the emergence of the field. In this paper, we contribute new empirical evidence to this argument using a rigorous and principled experimental method ...
David R. White +3 more
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Acute triggers of myocardial infarction: A case-crossover study
The Egyptian Heart Journal, 2017 Acute myocardial infarction (AMI) is one of the most preventable non-communicable diseases in human. Identifying triggers of myocardial infarction (MI) and prevention ways of exposure-induced complications can reduce morbidity and mortality in people at risk.The aim of this study was to identify the emotional, environmental, physical and chemical ...
Maryam Ghiasmand +3 more
openaire +3 more sources
Embedded experts in online collaborative learning: a case study [PDF]
, 2021 The affordance of online communication and collaboration technology provides a forum for preservice teachers, practicing teachers, and teacher educators to engage in authentic discourse where multiple perspectives can be shared.
Lock, Jennifer, Redmond, Petrea
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