Associations of Shift Work and Chronotype with Physical Activity and Eating Behaviors in Adult Women.

States’ health policies are intricately linked with reproductive health outcomes. With the Supreme Court decision in , states have independent jurisdiction over the legality of abortion. Even prior to the decision, differences in state‐level policies regarding reproductive rights, access to pregnancy and postpartum care, Medicaid eligibility, and social welfare programs have resulted in different health outcomes for women and children across states [, , , ]. For example, more restrictive state‐level reproductive rights, including abortion restrictions, have been associated with higher rates of maternal mortality [, ], fetal and infant mortality [], low birthweight, and larger Black–White disparities in preterm birth and low birthweight [, , ]. Differences in state legislative reproductive rights environments may also create an environment where people become pregnant when they do not intend to conceive. Nearly half of pregnancies in the United States are unintended, and rates of unintended pregnancy differ by state [, ]. The Centers for Disease Control and Prevention (CDC) define an unintended pregnancy as one that is either unwanted (pregnancy occurred when no more children were desired) or wanted later (pregnancy occurred earlier than desired, also known as mistimed) []. Unintended pregnancies are associated with serious adverse maternal and child health conditions across the life course, including intimate partner violence, preterm birth, low birthweight, and perinatal depression []. Rates of unintended pregnancy differ between various sociodemographic groups, and evidence suggests unintended pregnancy is not solely driven by individual‐level determinants but also influenced by broader societal factors such as lapses in access to quality medical care, structural determinants of health, and systemic racism []. Although unintended pregnancy differs by state [], there is little evidence about the extent to which this variation reflects a state's legislative reproductive rights environment rather than state population differences. This study evaluates this question by determining whether states with more restrictive reproductive rights have higher rates of unintended pregnancy after controlling for individual‐level sociodemographic characteristics. Understanding the association between state‐level reproductive rights and unintended pregnancy in the pre‐Dobbs era is crucial to understanding ongoing legislative trends and how they may be associated with health outcomes.