The relationship of unwed status to infant mortality.

We studied the impact of unwed status on infant mortality in the state of Iowa, where obstetric and newborn care is readily accessible. Our purpose was to document the extent of the contribution of unwed status to infant mortality and to compare unwed gravidas with their married counterparts. We hoped the comparisons would provide information that could be used for future programs of prevention. Our data encompassed a 10-year period (1977-1986) during which the incidence of infant deaths occurring in offspring of unmarried women was significantly greater than expected. The unwed population commonly consisted of younger, poorly educated, primigravid women who frequently did not seek prenatal care. We suggest that personal factors inherent in this group of women may be more operative than lack of access to perinatal care in determining pregnancy outcome. We believe our data underscore the need to redouble efforts to prevent unintended pregnancy.