How many repeated measures in repeated measures designs? Statistical issues for comparative trials
نویسندگان
چکیده
منابع مشابه
How many repeated measures in repeated measures designs? Statistical issues for comparative trials
BACKGROUND In many randomized and non-randomized comparative trials, researchers measure a continuous endpoint repeatedly in order to decrease intra-patient variability and thus increase statistical power. There has been little guidance in the literature as to selecting the optimal number of repeated measures. METHODS The degree to which adding a further measure increases statistical power ca...
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ژورنال
عنوان ژورنال: BMC Medical Research Methodology
سال: 2003
ISSN: 1471-2288
DOI: 10.1186/1471-2288-3-22