Recruitment procedure and inclusion/exclusion criteria
RA
Women enrolled in the pregnancy school programme were provided basic information about the study by the pregnancy school nurse and asked for permission to be contacted by a research assistant (RA). Upon receiving permission, their contact details were shared with the RA to assess eligibility. Inclusion criteria were: pregnant women aged 18 years or over; between 12 and 30 weeks of gestation, and; intending to attend all 5 on-line sessions of the pregnancy school programme. Exclusion criteria included women who were currently receiving any form of mental health care or reported suicidal ideation. Women who fulfilled the eligibility criteria were given information about the trial and all participants providing online informed consent were included in the trial.