A pitfall in the use of the Altman nomogram for power estimation.
Evans
M J
MJ
Harrison
C A
CA
Mapleson
W W
WW
D018849:Controlled Clinical Trials as Topic / Q000379:methods*; D003627:Data Interpretation, Statistical; D006801:Humans; D010149:Postoperative Pain / Q000517:prevention & control; D010894:Piroxicam / Q000627:therapeutic use; D012107:Research Design
D010894:Piroxicam