Data analysis
To investigate the effects of in-person BAI and computer-based BAI on tobacco smoking over 24 months with five time points (baseline, 6, 12, 18 and 24 months), a two-part latent growth curve model [To measure in-person BAI and computer-based BAI effects on smoking status (binary model part), odds ratios (OR) and 95% confidence intervals (CI) were obtained. To measure in-person BAI and computer-based BAI effects on the number of cigarettes per day (continuous model part), squared estimates of mean net changes were obtained. Primary time point was month 24 and statistical significance was tested with p < 0.05. Analyses were adjusted for all baseline covariates and conducted using MPlus version 8.4 [