Characteristics | Nonparticipants | Participants | P-value |
---|---|---|---|
Age (mean) | 18.4 Year | 18.5 Year | 0.366 |
Smoking | 26% | 18% | 0.062 |
Alcohol drinking | 47% | 51% | 0.867 |
Age at menarche (mean) | 13.3 Year | 13.2 Year | 0.199 |
Sexual intercourse | 26% | 21% | 0.066 |
Age at first sexual intercourse (mean) | 18.3 Year | 17.9 Year | 0.326 |
Lifetime multiple sexual partners | 13% | 12% | 0.295 |
HPV positive | 16% | 13% | 0.381 |