Statistical issues: sample size and dropout.
Lavori
P
P
Massachusetts General Hospital, Harvard Medical School, Cambridge.
D002986:Clinical Trials as Topic / Q000706:statistics & numerical data*; D006801:Humans; D011619:Psychotropic Drugs / Q000627:therapeutic use*; D012107:Research Design; D012494:Sampling Studies
D011619:Psychotropic Drugs