The ASSIST Trial baseline data from Yudkin and Moher 2001 consist of 21 general practices containing 2142 patients used for the design of a randomized trial which assigned to three treatments aiming to compare methods of preventing coronary heart disease. We have expanded the aggregated data from the practice level to the individual level and added a simulated randomized treatment variable.
ym_longA data frame with 2142 rows and 9 columns
practice: Identifier for the practice
id: Identifier for patients
n_practice: Number of patients with CHD in the practice
assessed: Whether a patient was coded as "adequately assessed" (the outcome of the study, measured here at baseline).
aspirin: Whether a patient was treated with aspirin at baseline.
hypo: Whether a patient was treated with hypotensives at baseline.
lipid: Whether patient was treated with lipid-lowering drugs at baseline.
assess_strata: Strata of the practice defined by the proportion of people adequately assessed at baseline (three strata, following Yudkin and Moher 2001).
trt: A simulated binary treatment, assigned at random at the practice level within levels of assess_strata.
Yudkin, P. L. and Moher, M. 2001. "Putting theory into practice: a cluster randomized trial with a small number of clusters" Statistics in Medicine, 20:341-349.