Cohort profile: the ADAPT study, a prospective study of pregnancy preferences, pregnancy, and health and well-being in the southwestern USA

Purpose: Significant methodological shortcomings limit the validity of prior research on pregnancy decision-making and the effects of 'unintended' pregnancies on people's health and well-being. The Attitudes and Decisions After Pregnancy Testing (ADAPT) study investigates the consequences for individuals unable to attain their pregnancy and childbearing preferences using an innovative nested prospective cohort design and novel conceptualisation and measurement of pregnancy preferences.

Participants: This paper describes the characteristics of the ADAPT Study Cohort, comprised of 2015 individuals aged 15-34 years, assigned female at birth, recruited between 2019 and 2022 from 23 health facilities in the southwestern USA.

Findings to date: The cohort was on average 25 years old. About 59% identified as Hispanic/Latine, 21% as white, and 8% as black, 13% multiracial or another race. Over half (56%) were nulliparous. About 32% lived in a household with income <100% of the federal poverty level. A significant minority (37%) reported a history of a depressive, anxiety or other mental health disorder diagnosis, and 30% reported currently experiencing moderate or severe depressive symptoms. Over one-quarter (27%) had ever experienced physical intimate partner violence, and almost half (49%) had ever experienced emotional abuse. About half (49%) had been diagnosed with a chronic health condition, and 37% rated their physical health as fair or poor. The 335 (17%) participants who experienced incident pregnancy over 1 year were similar to selected non-pregnant matched comparison participants in terms of age, racial and ethnic identity, and parity but were more likely to live with a main partner than comparison participants.

Future plans: We will continue to follow participants who experienced incident pregnancy and non-pregnant comparison participants until 2026. Analyses will examine pregnancy decision-making and investigate differences in health and well-being by prepregnancy pregnancy desires and feelings after the discovery of pregnancy, offering new insights into the consequences of not attaining one's reproductive preferences.

Trial registration number: NCT03888404.