A dataset of 19 trials of statins for cholesterol lowering vs. placebo. Each trial has a subgroup indicator for primary prevention (patients included had no previous heart disease) or secondary prevention (patients had previous heart disease). Dummy variable is coded such that covariate is equal to 1 if a study is a secondary prevention study and 0 if a study is a primary prevention study.
A list of Outcomes, Treat, Study, N, covariate, and Treat.order
S. Dias, A.J. Sutton, A.E. Ades, and N.J. Welton (2013b), Heterogeneity-Subgroups, Meta-Regression, Bias, and Bias-Adjustment, Medical Decision Making 33(5):618-640. doi: 10.1177/0272989X13485157
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