Understanding quit patterns from a randomized clinical trial: Latent classes, predictors, and long-term abstinence

Area of Science:

• Addiction research
• Behavioral psychology
• Public health

Background:

• Tobacco dependence treatment is a chronic process with a critical Cessation phase.
• Smoking trajectories during cessation are not well understood.
• This study examines quit behavior during the Cessation phase of integrated smoking treatment.

Purpose of the Study:

• To evaluate quit behavior patterns during the Cessation phase of integrated smoking treatment.
• To identify predictors of different quit trajectories.
• To understand the relationship between quit behavior patterns and long-term abstinence.

Main Methods:

• Included 267 treatment-seeking smokers in a clinical trial.
• Employed repeated-measure latent class analysis to assess quit patterns from quit day to 14 days post-quit.

Main Results:

• Identified four distinct classes of quit behavior: Consistent Quitters, Non-Quitters, Relapsers, and Delayed Quitters.
• Predictors of class membership included age, prior quit attempts, motivation to quit, and smoking urges on quit day.
• Class membership was significantly associated with 6-month abstinence.

Conclusions:

• Four relevant classes of quit behavior exist, each with unique predictors.
• These classes are linked to long-term smoking abstinence.
• Findings can inform manualized smoking cessation interventions tailored to specific quit behavior subgroups.