RT Journal Article SR Electronic T1 Randomized trials with missing outcome data: how to analyze and what to report JF Canadian Medical Association Journal JO CMAJ FD Canadian Medical Association SP 1153 OP 1157 DO 10.1503/cmaj.131353 VO 186 IS 15 A1 Rolf H.H. Groenwold A1 Karel G.M. Moons A1 Jan P. Vandenbroucke YR 2014 UL http://www.cmaj.ca/content/186/15/1153.abstract