Variables are expressed as medians (range) or n (%). NS, not significant (P > 0.05); NYHA, New York Heart Association; AST, aspartate aminotransferase; POD, postoperative day; ALT, alanine aminotransf
Objectives: There is limited evidence as to whether knowing a participant’s contact preferences improves completion of telephone assessments in clinical trials. We examined i) participants’ preference