Computer calculates pregnant brides study in Whatcom County
Whatcom County Washington brides married in 1963 were tracked to birth dates and last menstrual cycles using punched card data. Of 563 brides, 193 became mothers in 1968 1969. 20.4 percent pregnant at birth, with 66 between nine and 20 weeks. Eleven were 16, 103 21 or younger. most married in religious ceremonies and were White. Concerns raised over privacy and data use.