What does AFSI stand for?

The assessment of sexual behavior included the participants' age at first sexual intercourse, years of sexual experience, and history of STIs; the number of sexual partners, number of casual sexual partners, and frequency of condom and hormonal contraception use both ever and in the past 3 months; and in the past 3 months the form of birth control used the last time the participant had sexual intercourse, frequency of sexual intercourse under the influence of alcohol or drugs, and whether the participants' sexual partners had a STI or had sexual intercourse with others.

33) Age at first sexual intercourse (in one year's increase) 2931 0.

The mean age at first sexual intercourse in this group of rural adolescents was 15 years.

One problem presented by these data is that age at first sexual intercourse was given only in whole years.

27) RESULTS Sexual Activity and Alcohol Use In this sample, the reported age at first sexual intercourse ranged from eight to 19 years, and the average was 14.

The authors examine variables such as changes in the age at first sexual intercourse from the 1930s to the 1970s.

In all of the surveys except those at ages 13 and 17, participants were asked their age at first sexual intercourse.