- Power and sample size requirements for two-part modelsP A Lachenbruch
FDA CBER Office of Biostatistics and Epidemiology, Food and Drug Administration, Rockville, MD 20852, USA
Stat Med 20:1235-8. 2001..We derive sample size calculations. We note that some modifications of this procedure may provide better tests if the non-zero responses are discrete. Published in 2001 by John Wiley & Sons, Ltd...
- Comparisons of two-part models with competitorsP A Lachenbruch
FDA CBER Division of Biostatistics and Epidemiology, Food and Drug Administration, 1401 Rockville Pike, Rockville, MD 20852 1448, USA
Stat Med 20:1215-34. 2001..In those cases, the two-part models are not far behind, although statistically significantly poorer with respect to power. Published in 2001 by John Wiley & Sons, Ltd...
- Lot consistency as an equivalence problemP A Lachenbruch
U S FDA Center for Biologics Evaluation and Research, Rockville, Maryland 20852, USA
J Biopharm Stat 14:275-90. 2004..It appears to detect departures from equivalence that are not reflected by differences among group means...