All-Cause Mortality in Reproductive-Aged Females by State: An Analysis of the Effects of Abortion Legislation

To estimate the association between state-level abortion legislation and all-cause mortality among all females of reproductive age and maternal, fetal, and infant mortality.

We conducted a retrospective cohort study using the Centers for Disease Control and Prevention's WONDER (Wide-ranging ONline Data for Epidemiologic Research) database. Generalized estimating equations were used to estimate the association between supportive, moderate, and restrictive state abortion regulations and all-cause mortality in reproductive-aged females. Secondary outcomes included maternal, fetal, and infant mortality. The association of the number and type of laws on mortality were estimated.

Moderate and supportive states were not associated with a significant decrease in all-cause mortality compared with restrictive states. Maternal mortality (per 100,000 live births) was significantly lower in moderate (-5.79, 95% CI -9.88 to -1.70) compared with restrictive states, but not supportive states (-2.51, 95% CI -6.75 to 1.72). Infant mortality (per 1,000 live births) was significantly lower in both moderate (-0.56, 95% CI -1.09 to -0.04) and supportive (-1.10, 95% CI -1.56 to -0.64) states. Fetal mortality was lower in moderate states (-0.69, 95% CI -1.18 to -0.20) but not in supportive states (-0.64, 95% CI -1.14 to 0.13). Each additional abortion regulation was associated with an increase in maternal mortality (1.09/100,000 live births, 95% CI 0.36-1.82) and infant mortality (0.20/1,000 live births, 95% CI 0.12-0.26).

Moderate state abortion legislation was associated with lower rates of maternal, fetal, and infant mortality but not lower all-cause mortality in reproductive-aged females compared with restrictive laws. An increasing number of laws restricting abortion was associated with increased maternal and infant mortality.