The number of artificial abortions in female teachers of public schools in Kyoto prefecture was estimated from bills of medical fee submitted to the Kyoto Branch of the Public School Mutual Benefit Association in October, 1958.
Out of 5501 female techers aged 20-40, 129 teachers (32.8 per 1000 in a month) received artificial abortions in that month. This rate was 5.9 times and 3.9 times higher respectively comparing with the rate of reported artificial abortions in female populations of the same age in the entire country and in Kyoto Prefecture in the same year.
This high rate of artificial abortion seemed to be one of causes for the higher incidence of diseases of urogenital organ in female teachers.