Sample Size and Power When Designing a Randomized Trial for the Estimation of Treatment, Selection, and Preference Effects

Conclusions. With the growing interest in understanding treatment choices and with the use of decision aids, well-designed and adequately powered 2-stage randomized trial designs offer the opportunity to determine the effects of participants’ preferences. Our sample size formulas will help future studies ensure that they have adequate power to detect selection and preference effects.

Source: Medical Decision Making - July 18, 2014 Category: Health Management Authors: Turner, R. M., Walter, S. D., Macaskill, P., McCaffery, K. J., Irwig, L. Tags: Original Articles Source Type: research