Outcomes. The project follows-up with the couples at 6 months postpartum. Postpartum maternal abstinence is the main outcome, defined as maintaining smoke-free status continuously until the 6-month follow-up. The postpartum maternal abstinence is biochemically verified through expired carbon monoxide (CO) at 6-months postpartum (CO) <10 ppm. Secondary outcomes of interest are the maternal number of cigarettes smoked, self-efficacy, and motivation. The self-reported smoke status of the husband/partner is another outcome of interest.