Power and Sample Size Calculations in Clinical Trials with Patient-Reported Outcomes under Equal and Unequal Group Sizes Based on Graded Response Model: A Simulation Study

from Value in Health at http://bit.ly/2aEtmCK on July 30, 2016 at 06:27AM

Publication date:
Source:Value in Health
Author(s): Marziyeh Doostfatemeh, Seyyed Mohammad Taghi Ayatollah, Peyman Jafari