Age at first sexual intercourse compared to the onset of first menstruation

Actual (n = 649)

% [95% CI]

Before the onset of the first menstrual period

66

10.2 [7.1 - 14.5]

Same year with the onset of the first menstrual period

77

11.9 [8.0 - 16.8]

1 - 2 years after menarche

220

33.9 [29.2 - 38.9]

3 - 4 years after menarche

121

18.6 [14.3 - 22.7]

≥5 years after menarche

165

25.4 [21.6 - 29.4]

Distribution parameters of number of premarital intercourse.

M ± ET

2.8 ± 2.7

Min et Max

3 years before and 10 years after

Median

3 years

Fashion

3 years

First Quartile

1 year

Third quartile

5 years