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Table 4 Multivariate cox proportional hazards regression analysis for risk of incident HR-HPV among all women and women in monogamous relationships in the Costa Rican Vaccine Trial

From: A prospective study of absolute risk and determinants of human papillomavirus incidence among young women in Costa Rica

All women
Women characteristics HR (95% CI)
Marital Status Married Ref
Single 1.7 (1.4 – 1.8)
Divorced/Widowed 2.1 (1.7 – 2.7)
Measures of SES Less than 5 Ref
All 5 1.2 (1.0 – 1.4)
Years Sexually Active 0-2 1.3 (1.1 – 1.6)
3-4 1.2 (1.0 – 1.4)
5-7 1.1 (1.0 – 1.3)
>7 Ref
Monogamous Relationship Yes Ref
No 1.4 (1.2 – 1.6)
Lifetime Oral Contraceptive Use Yes Ref
No 1.2 (1.0 – 1.3)
Smoked Cigarettes Past 6 Months No Ref
Yes 1.2 (1.0 – 1.4)
Number of Enrollment HPV Types 0 Ref
1 1.4 (1.3 – 1.6)
2+ 1.5 (1.3 – 1.7)
Women in Monogamous Relationships Only
Lives with Sex Partner Yes Ref
No 2.1 (1.7 – 2.5)
Age of Sex Partner (years) 16-24 1.4 (1.0 – 1.9)
25-30 1.4 (1.0 – 1.8)
>30 Ref
Sex Partner Ever Smoke No Ref
Yes 1.3 (1.1 – 1.6)
Number of Other Women Sex Partner has had Sex with 0 Ref
1 1.0 (0.8 – 1.3)
2+ 1.3 (1.0 – 1.6)