Please select the arm or intervention descriptions that belong to the clinical trial below.
Title: Varenicline Smoking Cessation Treatment for Methadone Maintenance Patients
Brief Summary: This randomized trial will evaluate whether varenicline directly observed therapy provided at a methadone clinic is more efficacious than self-administered varenicline for promoting smoking cessation and enhancing adherence.


Options:
A: Arm Label: Tailored intervention; Type: EXPERIMENTAL; Interventions: Drug: Nicotine replacement therapy - Transdermal nicotine patch, Drug: Nicotine replacement therapy - Nicotine gum, Drug: Nicotine replacement therapy - Nicotine lozenge, Drug: Bupropion, Drug: Varenicline, Drug: Combination pharmacotherapy - Transdermal nicotine patch + nicotine gum, Drug: Combination pharmacotherapy - Transdermal nicotine patch + nicotine lozenge, Drug: Combination pharmacotherapy - Transdermal nicotine patch + bupropion, Behavioral: Tailored behavioral intervention, Behavioral: Alcohol use risk reduction, Behavioral: Behavioral activation for depressive symptoms, Behavioral: Behavioral management of postcessation weight gain | Arm Label: Enhanced standard of care; Type: ACTIVE_COMPARATOR; Interventions: Drug: Nicotine replacement therapy - Transdermal nicotine patch, Drug: Nicotine replacement therapy - Nicotine gum, Drug: Nicotine replacement therapy - Nicotine lozenge, Drug: Bupropion, Drug: Varenicline, Drug: Combination pharmacotherapy - Transdermal nicotine patch + nicotine gum, Drug: Combination pharmacotherapy - Transdermal nicotine patch + nicotine lozenge, Drug: Combination pharmacotherapy - Transdermal nicotine patch + bupropion, Behavioral: Tobacco quitline referral | Intervention Type: DRUG; Name: Nicotine replacement therapy - Transdermal nicotine patch; Assigned to Arm(s): Enhanced standard of care, Tailored intervention | Intervention Type: DRUG; Name: Nicotine replacement therapy - Nicotine gum; Assigned to Arm(s): Enhanced standard of care, Tailored intervention | Intervention Type: DRUG; Name: Nicotine replacement therapy - Nicotine lozenge; Assigned to Arm(s): Enhanced standard of care, Tailored intervention | Intervention Type: DRUG; Name: Bupropion; Assigned to Arm(s): Enhanced standard of care, Tailored intervention | Intervention Type: DRUG; Name: Varenicline; Assigned to Arm(s): Enhanced standard of care, Tailored intervention | Intervention Type: DRUG; Name: Combination pharmacotherapy - Transdermal nicotine patch + nicotine gum; Assigned to Arm(s): Enhanced standard of care, Tailored intervention | Intervention Type: DRUG; Name: Combination pharmacotherapy - Transdermal nicotine patch + nicotine lozenge; Assigned to Arm(s): Enhanced standard of care, Tailored intervention | Intervention Type: DRUG; Name: Combination pharmacotherapy - Transdermal nicotine patch + bupropion; Assigned to Arm(s): Enhanced standard of care, Tailored intervention | Intervention Type: BEHAVIORAL; Name: Tobacco quitline referral; Assigned to Arm(s): Enhanced standard of care | Intervention Type: BEHAVIORAL; Name: Tailored behavioral intervention; Assigned to Arm(s): Tailored intervention | Intervention Type: BEHAVIORAL; Name: Alcohol use risk reduction; Assigned to Arm(s): Tailored intervention | Intervention Type: BEHAVIORAL; Name: Behavioral activation for depressive symptoms; Assigned to Arm(s): Tailored intervention | Intervention Type: BEHAVIORAL; Name: Behavioral management of postcessation weight gain; Assigned to Arm(s): Tailored intervention
B: Arm Label: Placebo; Type: PLACEBO_COMPARATOR; Interventions: Drug: Champix | Intervention Type: DRUG; Name: Champix; Assigned to Arm(s): Placebo
C: Arm Label: Varenicline treatment as usual (TAU); Type: EXPERIMENTAL; Interventions: Drug: Varenicline | Arm Label: Varenicline directly observed therapy; Type: EXPERIMENTAL; Interventions: Drug: Varenicline | Intervention Type: DRUG; Name: Varenicline; Assigned to Arm(s): Varenicline directly observed therapy, Varenicline treatment as usual (TAU)
D: Arm Label: varenicline; Type: EXPERIMENTAL; Interventions: Drug: varenicline | Arm Label: placebo; Type: PLACEBO_COMPARATOR; Interventions: Drug: placebo | Intervention Type: DRUG; Name: varenicline; Assigned to Arm(s): varenicline | Intervention Type: DRUG; Name: placebo; Assigned to Arm(s): placebo

Answer: C