Abstract Smoking cessation during pregnancy is very important but few women succeed. Supporting change in identity (i.e. perceptions of “who I am”) towards nonsmoking seems a promising route to smoking cessation. This study aimed to assess identity of participants of the Smoke and Alcohol Free with EHealth and Rewards (SAFER) pregnancy study and evaluate the group session on identity. This prospective, uncontrolled, before-after study was conducted in The Netherlands in 2019–2021.
