Is the motivation to quit smoking a predictor of abstinence maintenance?

INTRODUCTION

The aim of this study was to explore the utility of measuring motivation to quit smoking as a predictor of abstinence maintenance among smokers who wanted to quit and who were included in a multicenter study conducted in daily clinical practice.

METHODS

This observational, longitudinal (prospective cohort), multicenter study was conducted in smoking clinics in Spain and the Argentine Republic in daily clinical practice. Motivation was assessed using three quantitative motivation tests and a Visual Analogue Scale. Statistical analysis included descriptive, association measures and logistic regression models.

RESULTS

Of a total of 404 subjects, 273 were ultimately included for analysis (147 women; 53.8%), mean age 51±11 years). In one year, 53.5% (36.13% by intention to treat) of subjects (146) were successful in quitting smoking [men: 45.2% (66) and women: 54.8% (80)], with no differences between sexes. None of the scales utilized was associated, in an unquestionable or direct way, with long-term abstinence, although three of them, in a very complex model, with additional variables and added interactions, were associated with the ‘result’ variable, when other variables intervened in certain circumstances.

CONCLUSIONS

None of the analyzed motivational scales alone demonstrated an association with success or failure in quitting smoking; thus, their use in isolation is of no value. Some of the scales analyzed might be related to the maintenance of abstinence but in complex models where other variables intervene, which makes interpretation considerably difficult. Therefore, the predictive capacity of the tests analyzed, based on the models, was low.

Effectiveness and safety of varenicline and nicotine replacement therapy among mental health patients: A retrospective cohort study

OBJECTIVE

To analyse the effectiveness and safety of two smoking cessation medications (varenicline and nicotine patches) in patients with controlled psychiatric disorders in daily practice in a Smoking Cessation Service.

METHODS

This is a retrospective cohort study. It was carried on at a smoking cessation clinic in Madrid and used a convenience sampling strategy. We reviewed medical records of patients diagnosed with psychiatric disorders who attended a Smoking Cessation Service. All patients received similar treatment programme: a combination of pharmacological treatment (varenicline or nicotine replacement therapy) and intensive cognitive-behavioural therapy.

RESULTS

The group included 349 patients (38.4% men). Mean age (SD) 49.6 (10.5) years. 28.3 (12.8) cigarettes per day. 156 subjects achieved 9-24 weeks continuous abstinence (44.7%), in 39% of those who used nicotine patches and in 53.7% of those who used varenicline. OR: 1.64 (95% CI: 1.03-2.61; p=0.036). Success rates were higher in men; OR 1.85 (95% CI: 1.12-3.04; p=0.016). High levels of CO and high daily cigarette use were associated with poorer success rates (OR: 0.98, 95% CI: 0.96-0.99, p=0.007; and OR: 0.98, 95% CI: 0.96-1.00, p=0.045), respectively. Nausea and pruritus were the most common adverse events. No cases of suicidal ideation or behaviour were found.

CONCLUSIONS

Varenicline and nicotine patches could be safe and effective smoking cessation treatments for patients with psychiatric disorders in daily clinical practice.