News|Articles|October 1, 2002

Preventing the Practice of Testing Into Compliance


Related to this article

Glass vial, pipette and woman scientist in laboratory for medical study, research or experiment. Test tube, dropper and professional female person with chemical liquid for pharmaceutical innovation. | Image Credit: ©HockleyMedia24/peopleimages.com -stock.adobe.com
Equivalence test using two one-sided tests are widely used for demonstrating the comparability of treatment effects in different research fields. The method described in the manuscript aims to use simulations in Microsoft Excel to compute power for 2 one-sided tests for two groups with unequal variances.
Ask the Expert: Choosing Ingredient Suppliers
Jane Zhang of ETCH Sourcing explains why geopolitics, transparency, and partnership now weigh as heavily as cost and quality when companies choose suppliers, in this episode of Ask the Expert, moderated by Susan J. Schniepp of Nelson Labs.