Use of non-assigned interventions in a randomized trial of internet and telephone treatment for smoking cessation.

ABSTRACT:

Introduction

A recent meta-analysis of Internet interventions for smoking cessation found mixed evidence regarding effectiveness. One explanation may be differential use of non-assigned cessation treatments-including other Internet programs-that either amplify or mask study intervention effects. We examined the impact of non-assigned treatment use on cessation outcomes in The iQUITT Study, a randomized trial of Internet and telephone treatment for smoking cessation.

Methods

Participants were randomized to a basic Internet (BI) comparison condition (N = 675), enhanced Internet (EI: N = 651), or EI plus telephone counseling (EI+P: N = 679). The primary outcome was 30-day point prevalence abstinence (ppa) at 3 and 6 months. Assigned intervention use was assessed with automated

SUBMITTER: Cobb CO 

PROVIDER: S-EPMC4207870 | biostudies-literature | 2014 Oct

REPOSITORIES: biostudies-literature