[Sexual development in urban and rural girls].
By means of interviews the sexual development of 16 to 18-year-old Czech girls was investigated: 163 lived in rural communities with less than 2,000 inhabitants and 271 lived in towns with more than 100,000 inhabitants. Comparison of these two groups, using Schofield's diagram, revealed that the difference in the course of sexual development was not statistically significant. However, when individual items of the examination were analyzed, significant differences were found in the education of probands and both their parents, education being higher in the group of urban girls. In urban girls the prevalence of broken marriages of their parents was also higher, the loss of the father before the child was 18 years was more frequent and the number of siblings was smaller. The age at the first sexual intercourse was lower in urban girls and they had more frequent experience with cunnilingus and fellatio.