Seasonality of induced abortion in North Carolina.

This paper examines the seasonality of induced abortion in North Carolina between 1980 and 1993. Distinct seasonal patterns are found, with a peak in February and a valley in September. These patterns correspond to the implicit seasonality of conceptions associated with the seasonality of birth pattern. One notable difference from the general pattern is among unmarried women aged 18 and younger. They have the February peak and an additional peak in August that may be associated with the summer vacation from school.