Restricted accessLetterFirst published online 2019-5
Authors' reply: Letter to the Editor: Preference option randomized design (PORD) for comparative effectiveness research: Statistical power for testing comparative effect,preference effect,selection effect,intent-to-treat effect,and overall effect (SMMR,Vol. 28,Issue 2,2019)
Heo M, Meissner P, Litwin AH, et al. Preference option randomized design (PORD) for comparative effectiveness research: statistical power for testing comparative effect, preference effect, selection effect, intent-to-treat effect, and overall effect. Stat Methods Med Res. 2019; 28: 626–640.
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