Monitoring strategies for clinical intervention studies
نویسندگان
چکیده
منابع مشابه
Clinical Trials and Intervention Studies
In a controlled observational cohort study, two groups of subjects are selected from two populations that (hopefully) differ in only one characteristic at the start. The groups of subjects are studied for a specific period and contrasted at the end of the study period. For instance, smokers and nonsmokers are studied for a period of 10 years, and at the end the proportions of smokers and nonsmo...
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ژورنال
عنوان ژورنال: Cochrane Database of Systematic Reviews
سال: 2019
ISSN: 1465-1858
DOI: 10.1002/14651858.mr000051