TABLE 1.

Characteristics of Women Included in This Study by Their Selection Criteria

	All N = 353	Group 1 N = 314	Group 2 N = 24	Group 3 N = 15	P
Median age (yr)	42	42	46	29	0.0001
Ever pregnant (%)	93.5	96.2	100.0	26.7	<0.0005
Ever smoke (%)	9.4	9.6	8.3	6.7	1
Using oral contraceptives (%)	16.4	15.9	8.3	40.0	0.04
No sex partners in the last year (%)	19.0	18.8	20.8	20.0	0.9
Married (%)	70.3	71.3	75.0	40.0	0.04

Group 1: Carcinogenic HPV positive at the year 5–7 visit; Group 2: Carcinogenic HPV negative at the year 5–7 visit; Group 3: Became sexually active between the year 5–7 visit and this follow-up visit. Kruskal-Wallis test was used to test for statistical differences in median age between groups.

Fisher exact was used to test for statistical differences in categorical variables between groups.