Improvement of Smoking Abstinence Rates With Increased Varenicline Dosage: A Propensity Score-Matched Analysis.
J Clin Psychopharmacol
; 38(1): 34-41, 2018 Feb.
Article
em En
| MEDLINE
| ID: mdl-29232312
ABSTRACT
PURPOSE/BACKGROUND:
It is unclear whether increasing the dose of varenicline beyond the standard dose of 2 mg/d would improve smoking abstinence.METHODS:
We examined the effect of 3 mg/d of varenicline on smoking abstinence among smokers who had reduced their smoking by 50% or more in response to 2 mg/d for at least 6 weeks but had not quit smoking. Of 2833 patients treated with varenicline, dosage of a subset of 73 smokers was increased to 3 mg/d after 6 weeks. We used a propensity score analysis involving multiple baseline covariates to create a comparative sample of 356 smokers who remained on 2 mg/d. All smokers received concurrent and similar smoking-cessation counseling.RESULTS:
At 3 months, we found higher 7-day point prevalence smoking-abstinence rate in the 3-mg group (26%) than in the 2-mg group (11.5%, χ = 10.60, P < 0.001; risk ratio [RR], 2.3; 95% confidence interval [CI], 1.4-3.6). The difference in abstinence rates remained significant at the 6-month (P < 0.001; RR, 2.6; 95% CI, 1.6-3.9) and 9-month follow-up (P < 0.001; RR, 2.2; 95% CI, 1.4-3.3).CONCLUSIONS:
A relatively small increase in the daily dose of varenicline seems to offer a benefit for those who are not able to achieve total abstinence after approximately 6 weeks of 2 mg/d.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Fumar
/
Abandono do Hábito de Fumar
/
Agonistas Nicotínicos
/
Vareniclina
Tipo de estudo:
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limite:
Female
/
Humans
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Male
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Middle aged
Idioma:
En
Ano de publicação:
2018
Tipo de documento:
Article