Effectiveness of video- versus text-based computer-tailored smoking cessation interventions among smokers after one year
Mené aux Pays-Bas auprès de 2 099 participants, cet essai randomisé compare, du point de vue du taux d'abstinence tabagique à 12 mois, l'efficacité d'interventions informatisées comportant des messages audiovisuels ou textuels personnalisés
Background : In western countries smoking prevalence rates are high among smokers unmotivated to quit and those with a lower socioeconomic status (LSES). Multiple computer tailoring and the use of audio-visual aids may improve such interventions and increase cessation in LSES smokers. This study assessed the 12-month effectiveness of a video- and text-based computer-tailored intervention.
Methods : A randomized controlled trial in the Netherlands was used in which smokers were allocated to the video-based condition (VC) (N=670), the text-based condition (TC) (N=708) or the control condition (CC) (brief generic text advice) (N=721). After 12 months, self-reported prolonged abstinence was assessed and biochemically verified in respondents indicating to have quit smoking. Three analysis strategies were used to assess the effects: 1. Multiple imputation (MI); 2. Intention-to-treat (ITT)3. complete case analysis (CC).
Results : VC was more effective on prolonged abstinence compared to CC (Odds ratio (OR) = 1.90, p = .005) and the text-based condition (OR = 1.71, p = .01). VC was furthermore more effective than TC. No differences were found for SES and motivational levels. Results were similar when using ITT and CC. For our secondary outcome seven-day point prevalence abstinence, however, neither VC (OR = 1.17, p = .34) or TC (OR = 0.91, p = .52) outperformed the CC.
Conclusion : The video-based computer-tailored intervention was effective in obtaining substantial long-term abstinence compared to the text based version and a brief generic text advice.
Funding : This work was supported by ZonMw, the Netherlands Organisation for Health Research and Development (grant number: 20011007).
Preventive Medicine , résumé, 2014