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Randomized Controlled Trial
. 2012 Jul;17(5):640-52.
doi: 10.1177/1359105311422457. Epub 2011 Nov 10.

Change in self-efficacy, autonomous and controlled motivation predicting smoking

Ana-Paula Cupertino  1 , Carla Berg, Byron Gajewski, Siu-kuen Azor Hui, Kimber Richter, Delwyn Catley, Edward F Ellerbeck
Affiliations
Randomized Controlled Trial

Change in self-efficacy, autonomous and controlled motivation predicting smoking

Ana-Paula Cupertino et al. J Health Psychol. 2012 Jul.

Abstract

Although motivational interviewing (MI) has been shown to be effective in changing health behaviors, its effects on smoking cessation have been mixed. The purpose of the present study is to assess factors of motivation and self-efficacy as they mediate the relationship between MI and smoking cessation. This is a secondary analysis of an MI based smoking cessation randomized trial. MI counseling was associated with change in smoking behaviors during a 12 months intervention but was not related to autonomous motivation, controlled motivation, or self-efficacy at baseline and 6 months, the hypothesized mediators. This study confirmed the pathway to quit smoking through increase in self-efficacy.

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Figures

Figure 1
Figure 1
Structural equation model. Log SmokeB=natural log transformation of smoking baseline + 10; Log Smoke12=natural log transformation of smoking 12 months+ 10. Ovals are latent variables and rectangles are observed variables. Items associated with latent variables are not shown. Paths with statistically significant relations are shown (p<.05). All path coefficients are standardized except Group to Log Smoke 12. CFI=0.940 and RMSEA=0.045. The variance in Log igs 12 explained by the model using grey boxes only is R2=0.194; using all variables R2=0.306.
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