Table 4.

Factors associated with anal human papillomavirus (HPV) infection in men having sex with women in São Paulo, Cuernavaca, and Tampa: multivariate analyses.

	Any	Any
	HPV typea	Oncogenic typeb
Factor	OR (95% CI)	OR (95% CI)
Lifetime no. of female sex partners
0–2 partners	Reference	Reference
3–9 partners	1.89 (0.80– 4.48)	1.60 (0.58– 4.44)
≥ 10 partners	3.35 (1.37– 8.21)	2.34 (0.81– 6.75)
Duration of relationship with primary sex partner
No primary sex partner	2.24 (0.99– 5.07)	4.53 (1.43– 14.29)
< 1 year	2.78 (1.25– 6.17)	6.90 (2.22– 21.50)
1–4 years	2.01 (0.85– 4.78)	3.54 (1.04– 12.08)
5–10 years	2.28 (1.06– 4.92)	3.36 (1.07– 10.53)
> 10 years	Reference	Reference
Ever had oral or anal sex with a man
Yes	2.09 (1.12– 3.91)	2.45 (1.14– 5.27)
No	Reference	Reference
Smoking status
Never	Reference	Referencec
Former	0.50 (0.26– 0.96)	0.66 (0.27– 1.57)
Current	0.71 (0.42– 1.21)	0.73 (0.34– 1.56)

NOTE. ‘Any HPV type’ cases are positive for at least one of 37 HPV types. ‘Any oncogenic type’ cases are positive for at least one of 13 oncogenic HPV types regardless of the presence of nononcogenic types. ‘Only nononcogenic types’ cases are positive only for single or multiple nononcogenic types. Odds ratios in each model are adjusted for confounders: no. of female sex partners during the preceding 3 months, age, and study site. CI, confidence interval; OR, odds ratio.

^aOdds ratios adjusted by confounders and other variables in model.

^bOdds ratios adjusted by confounders and other variables in model with the exception of smoking status which is shown only for comparison purposes.

^cSmoking status is adjusted only by confounders.