The baseline cohort of the BluePrInt study consists of around 1031 people who experienced an unintended pregnancy in the Netherlands: 638 womxn (382 continued the pregnancy (CT), 256 had an abortion ((AB)) and 273 partners CTgroup: 142, AB-group: 131). CT participants completed the questionnaire around 14 weeks gestation. The majority of AB participants had a first trimester abortion (89.8%), and filled out the questionnaire afterwards. A second questionnaire was administred one year later, and was filled out by 55% of participants. Further, additional in-depth interviews were conducted with 60 participants.

The BluePrInt study was designed to investigate mental health consequences of unintended pregnancy. Data contains info on the degree of pregnancy unintendedness, mental health, social support, partner involvement, items related to the decision-making process, contraceptive behavior, care experiences and child development (in the case the unintended pregnancy was carried to term).