If it isn’t, and is a report of an observational study (such as a cohort, cross-sectional, case-control, or case series study, or a meta-analysis), then all cause-and-effect language must be replaced. But by what? Generally, association may be a useful replacement for effect. The ...
Cohort studies generally provide more definitive evidence regarding causality than do other types of observational epidemiologic studies, but the high cost usually associated with them limits their use to special situations. Retrospective cohort studies and combined cohort/case-control studies are suggested ...
展开 关键词: Humans Still's Disease, Adult-Onset Sensitivity and Specificity Retrospective Studies Cohort Studies Follow-Up Studies Adult 被引量: 245 年份: 1996 收藏 引用 批量引用 报错 分享 全部来源 求助全文 Semantic Scholar 万方医学 NCBI Europe PMC NCBI 查看更多 相似文献 参考文献 引证文献Non...
A convenience sample of 400 anal swabs were obtained from 200 HIV-infected and 200 HIV-uninfected sexually active Bangkok MSM Cohort Study participants. After swab collection in PreservCyt (Cytyc Corp, Marlborough, MA), the media was stored at -80°C until processing. DNA was extracted, ...
The aim of longitudinal surveys is to collect data and examine the changes in the data gathered. Longitudinal surveys are used in cohort studies, panel studies and trend studies. Check out our quiz-page with tests about: Psychology 101 Science Flags and Countries Capitals and Countries « ...
Animal studies suggest that monounsaturated and polyunsaturated fat may have opposite effects on the risk of breast cancer.We performed a population-based prospective cohort study, including 61,471 women aged 40 to 76 years from 2 counties in central Sweden who did not have any previous diagnosis ...
The quality and risk of bias of included studies was assessed via a modified version of the Newcastle – Ottawa Scale (NOS) for cohort studies [27] (see Additional file 3). Using this scale, the risk of bias of individual studies was assessed across three categories: participant selection ...
Intimate Partner Violence, Relationship Power Inequity, and Incidence of HIV Infection in Young Women in South Africa: A Cohort Study Cross-sectional studies have shown that intimate partner violence and gender inequity in relationships are associated with increased prevalence of HIV in w... RK ...
Impact of Caesarean section on future pregnancy - a review of cohort studies Summary. Use of Caesarean sections has notably increased in many countries. This article reviews existing cohort type studies to compare subsequent reprodu... Elina,Hemminki - 《Paediatric & Perinatal Epidemiology》 被引量...
In the present study, we examined leisure-time physical activity in relation to risk of 26 different cancer types in a pooled analysis of 12 prospective cohort studies and 1.44 million participants. We address several methodologic limitations in prior research by attaining case numbers comparable to...