Choosing a control group.
Gauvreau
K
K
Department of Biostatistics, Harvard School of Public Health, Boston, Massachusetts.
Pagano
M
M
D018849:Controlled Clinical Trials as Topic / Q000379:methods*; D006801:Humans; D018579:Patient Selection; D011897:Random Allocation; D016032:Randomized Controlled Trials as Topic / Q000379:methods*; D015983:Selection Bias