AIMS: This study aims to investigate trends in self-reported daily smoking and quitting by relationship status in 1973-2022.
METHODS: Repeated and representative cross-sectional tobacco surveys of the adult population in Norway were analysed in the age group 25-74 years. Logistic regression was used to estimate the adjusted predicted probability of daily smoking and former smoking for persons in a formalised relationship (married or cohabitant) and persons not in a formalised relationship.
RESULTS: Since the 1970s, the decline in daily smoking has been present for men regardless of relationship status, but with more smoking among men not in a relationship from the 2000s onward. For women not in a relationship, daily smoking increased among those not in a relationship from the mid-1980s, surpassing the smoking rate among men in a relationship. From the 1990s, daily smoking was higher in women not in a relationship compared with women in a relationship. In the past decade (2013-2022), the adjusted odds ratio of daily smoking was 0.49 for people in a relationship compared with those not in a relationship.
CONCLUSIONS:
