Randomization
coronary heart disease, pneumonia, diabetes
ACUTE MYOCARDIAL INFARCTION, PNEUMONIA, CHRONIC OBSTRUCTIVE PULMONARY DISEASE, CONGESTIVE HEART FAILURE, CORONARY HEART DISEASE, DIABETES
Patients were randomized electronically using block sizes of two and stratified by one of the following six primary conditions for admission: acute myocardial infarction or coronary heart disease, chronic obstructive pulmonary disease, congestive heart failure, diabetes, pneumonia, or any other condition. These conditions were selected to represent the leading primary diagnoses associated with hospital readmissions in Pennsylvania for which we hypothesized activity patterns could inform readmission rates. All investigators, statisticians, and data analysts were blinded to arm assignments until the study and analysis were completed.