Table 3.

Association of Demographic, Reproductive History, Contraceptive Use, Sexual Behavior, and Clinical Variables and Clearance of Any HPV and HR-HPV Infection

	Any HPV infection		Any HR-HPV infection
Variable	HR (95% CI)	aHRa (95% CI)	HR (95% CI)	aHRa (95% CI)
Age (y)
<26	1.0	1.0	1.0	1.0
26–30	0.78 (.57–1.06)	0.79 (.58–1.07)	0.92 (.59–1.40)	1.08 (.69–1.68)
31–33	0.87 (.64–1.18)	0.88 (.65–1.20)	0.92 (.59–1.42)	0.98 (.64–1.50)
34–38	0.79 (.57–1.09)	0.86 (.62–1.18)	0.71 (.44–1.15)	0.83 (.52–1.33)
Study site
North	1.0	1.0	1.0	1.0
Northeast	0.73 (.54–1.00)	0.86 (.62–1.18)	0.62 (.39–.98)	0.92 (.56–1.50)
South	0.94 (.72–1.24)	0.99 (.75–1.31)	0.97 (.66–1.44)	1.15 (.78–1.70)
Central	0.72 (.54–.95)	0.73 (.54–.98)	0.65 (.44–.98)	0.87 (.57–1.34)
Contraceptive use
NHC	1.0	1.0	1.0	1.0
DMPA	0.99 (.74–1.33)	0.75 (.50–1.13)	0.86 (.57–1.31)	0.78 (.45–1.37)
COC	0.78 (.61–.99)	0.67 (.49–.93)	0.69 (.49–.98)	0.58 (.37–.94)
No. of partners L6M
0	1.0	1.0	1.0	1.0
1	0.78 (.43–1.42)	1.12 (.48–2.58)	0.52 (.13–2.10)	2.45 (.11–53.0)
>1	1.46 (.56–3.82)	1.02 (.37–2.85)	0.70 (.13–3.70)	3.13 (.13–75.0)
No. of lifetime partners
1	1.0	1.0	1.0	1.0
2	0.65 (.48–.87)	0.61 (.45–.82)	0.82 (.55–1.22)	0.86 (.56–1.31)
3	0.91 (.64–1.31)	0.84 (.58–1.21)	0.93 (.57–1.53)	0.99 (.59–1.66)
≥4	1.11 (.84–1.48)	1.06 (.80–1.39)	1.09 (.77–1.53)	1.04 (.69–1.57)
Cervical ectopy
No	1.0	1.0	1.0	1.0
Yes	0.88 (.70–1.11)	0.85 (.62–1.17)	0.78 (.56–1.09)	0.76 (.49–1.18)
HPV infection type
Prevalent	1.0	1.0	1.0	1.0
Incident	2.86 (2.24–3.65)	3.25 (2.55–4.15)	2.78 (1.93–3.90)	3.01 (2.08–4.34)

Abbreviations: aHR, adjusted hazard ratio; CI, confidence interval; COC, combined oral contraception; DMPA, depomedroxyprogesterone acetate; HPV, human papillomavirus; HR, hazard ratio; HR-HPV, HPV types considered to be high risk; L6M, last 6 months; NHC, nonhormonal contraception.

^aAll variables mutually adjusted for.