Exploring the "active ingredients" of an online smoking intervention: a randomized factorial trial.

ABSTRACT:

Introduction

Research needs to systematically identify which components increase online intervention effectiveness (i.e., active ingredients). This study explores the effects of 4 potentially important design features in an Internet-based, population-level smoking intervention.

Methods

Smokers (n = 1,865) were recruited from a large health care organization, regardless of readiness to quit. Using a full factorial design, participants were randomized to 1 of the 2 levels of each experimental factor (message tone [prescriptive vs. motivational], navigation autonomy [dictated vs. not], e-mail reminders [yes vs. no], and receipt of personally tailored testimonials [yes vs. no]) and provided access to the online intervention. Primary outcomes were self-reported 7-day point-preval

SUBMITTER: McClure JB 

PROVIDER: S-EPMC4110925 | biostudies-literature | 2014 Aug

REPOSITORIES: biostudies-literature