Please select the outcome measures that correspond to the clinical trial below.
Title: EVarQuit: Extended Pre-quit Varenicline to Assist in Quitting Smoking
Brief Summary: Varenicline is the most effective smoking cessation therapy available. Nevertheless, most smokers using varenicline relapse within the first few months after quitting. Varenicline is hypothesized to help smokers to quit in part by reducing the reinforcing effects of smoking during the standard 1-week pre-quitting treatment phase. Learning theory and previous human and animal research support the hypothesis that a longer period of varenicline treatment prior to the target quit date (TQD) will lead to greater reductions in smoking before quitting, and higher long-term cessation rates, compared to standard varenicline treatment. Building on promising preliminary clinical data, the study tests these hypotheses with a full-scale randomized clinical trial (RCT). 320 treatment-seeking smokers will be randomized to a standard run-in group (3 weeks of placebo, followed by the standard 1 week of pre-TQD varenicline) or an extended run-in group (4 weeks of pre-TQD varenicline). Both groups will receive brief individual cessation counseling and 11 weeks of post-TQD varenicline. The primary outcome measure will be bio-verified continuous abstinence at end-of-treatment (weeks 8-11 post-quit; cessation at 26-weeks post TQD will also be examined. Hypothesized mediating mechanisms (e.g., smoking reinforcement) will be evaluated by behavioral, physiological, and subjective measures assessed both in the lab and using real-world, real-time electronic momentary assessments (EMA). The investigators predict that long-term, bio-verified smoking cessation will be improved among the extended run-in group compared to the standard run-in group. The investigators further predict the improved clinical outcomes with extended run-in varenicline will be explained (or mediated) by greater pre-quit reductions in smoking reinforcement among the extended run-in group compared to the standard run-in group. The significance of this work is clear: The project aims to make best available treatment for smoking cessation even better, using a method that is ripe for dissemination and an approach that will elucidate critical mechanisms to target in the next generation of treatment enhancement.


Options:
A: Time to Occurrence of Major Adverse Cardiovascular Event (MACE) During Treatment Period (up to Date of Last Dose of Study Drug) in Study NCT01456936. (Baseline to last dose of study drug in parent study NCT01456936 (up to 12 weeks).)
B: Number of Participants With Continuous Abstinence at End-of-Treatment (EOT) as Assessed by Self-Report and Bio-verification (Self-report Treatment Weeks 12-15; bio-verification ~Week 16)
C: Varenicline Adherence as Measured by Pill Count (Weeks 0-1, 1-2, 2-3, 4-6, 7-9, 10-12)
D: Occurrence of Neuropsychiatric (NPS) Adverse Events (AE) - the Primary Study Endpoint (Treatment emergent is first dose date to last dose date (up to 12 weeks) plus 30 days.); Estimated NPS AE Rate (%), by Cohort (Treatment emergent is first dose date to last dose date (up to 12 weeks) plus 30 days.)

Answer: B