Sample size calculations for randomized controlled trials.
Wittes
Janet
J
Statistics Collaborative, Inc., 1710 Rhode Island Avenue NW, Suite 200, Washington, DC 20036, USA. janet@statcollab.com
D015982:Bias; D003627:Data Interpretation, Statistical; D006801:Humans; D016032:Randomized Controlled Trials as Topic / Q000706:statistics & numerical data*; D012107:Research Design / Q000706:statistics & numerical data; D018401:Sample Size