Table 1.
Mean age (range) | 18 yrs (12.4 to 21.9) |
Mean age at 1st intercourse (SD) | 16.5 yrs (1.95) |
Mean years since menarche (SD) | 5.8 yrs (2.2) |
Mean number of lifetime sexual partners (SD) | 4.71 (6.22) |
Race/ethnicity | |
White | 31% |
Asian/Pacific Islander | 16% |
Black | 9% |
Latina | 6% |
Mixed/other | 38% |
History of sexually transmitted infection prior to entry | 8.4% |
SD = standard deviation