Efficacy of Commercial Weight-Loss Programs

This article has been corrected. The original version (PDF) is appended to this article as a Supplement. Background: Commercial and proprietary weight-loss programs are popular obesity treatment options, but their efficacy is unclear. Purpose: To compare weight loss, adherence, and harms of commercial or proprietary weight-loss programs versus control/education (no intervention, printed materials only, health education curriculum, or <3 sessions...