DCR-4 Errata (updated July 8, 2014)

Designing Clinical Research
Fourth Edition, LWW, 2013
(S. B. Hulley, S. R. Cummings, W. S. Browner, et al.)

Page 80, equation near the bottom of the page

Replace

N = 4ZαS2 ÷ W2

with

N = 4Zα2S2 ÷ W2

Please email us to report errata.

dcr4@quesgen.com

Errata from the Third Edition (DCR-3)