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. 2011 Mar 30;6(3):e18297. doi: 10.1371/journal.pone.0018297

Table 3. Unadjusted and adjusted prevalence ratios (PR) for the association of factors with cervical intraepithelial neoplasia (CIN)2+ for all HIV-infected women and for those women harboring high-risk human papillomavirus (HR HPV) infection.

All women HR HPV infected
Unadjusted Adjusted Unadjusted
Variable PR 95%Cl PR 95%Cl PR 95%Cl
Age (years)
<35 2.03 0.84–4.85a 3.22 1.23–8.39b 1.69 0.73–3.94a
≥35 1.00 1.00 1.00
Race/ethnicity
White 1.00 1.00
Non-white 0.98 0.43–2.21 1.43 0.47–2.29
Years of formal education
<5 0.50 0.14–1.73 0.53 0.16–1.79
5–8 0.89 0.36–2.17 0.92 0.36–2.18
>8 1.00 1.00
Married/living with partner
Yes 1.00 1.00
No 2.04 0.82–5.09a 1.78 0.73–4.31a
Age at first sexual intercourse (years)
≤16 years 1.64 0.72–3.71 1.77 0.80–3.90a
>16 years 1.00 1.00
Current sexual partners
Yes 1.45 0.60–3.47 1.27 0.54–3.0
No 1.00 1.00
Number of lifetime sexual partners
0–1 1.00 1.00
2–3 0.26 0.04–1.47a 0.26 0.05–1.14
≥4 0.96 0.29–3.16 0.86 0.27–2.73
Current tobacco use
Yes 2.70 1.18–6.17b 3.69 1.54–8.78b 3.71 1.67–8.26b
No 1.00 1.00 1.00
Number of pregnancies
None 1.00 1.00
One 0.25 0.04–1.50a 0.36 0.07–1.96
≥2 0.70 0.21–2.32 1.21 0.38–3.87
Number of vaginal deliveries
None 1.00 1.00
≥1 1.53 0.62–3.77 1.95 0.84–4.52a
Use of contraceptive hormones (oral/injectable)
Yes 0.59 0.08–4.17 0.46 0.07–3.05
No 1.00 1.00
Nadir CD4+ T-cell count (cells/mm3)
<350 3.43 1.03–11.33b 6.03 1.50–24.3b 2.47 0.77–7.84a
≥350 1.00 1.00 1.00
Baseline CD4+ T-cell count (cells/mm3)
<350 1.79 0.74–4.37 1.13 0.48–2.66
≥350 1.00 1.00
AIDS defining illness
Yes 1.97 0.79–4.88a 1.66 0.73–3.75
No 1.00 1.00
HAART for more than 60 days at cohort entry
Yes 2.31 1.02–5.22b 1.87 0.85–4.12a
No 1.00 1.00
Time since last Pap test
≤1 year 1.00 1.00
1–3 years 1.06 0.44–2.54 1.11 0.48–2.60
>3 years 0.55 0.12–2.36 0.55 0.13–2.24
Self-reported history of HPV
Yes 1.71 0.69–4.26 1.33 0.54–3.17
No/does not know 1.00 1.00
VIN and/or VAIN
Yes 4.26 1.60–11.29b 2.68 0.99–7.24 2.51 0.98–6.44a
No 1.00 1.00 1.00
a

p-value <0.20

b

p-value <0.05

HAART: highly-active antiretroviral therapy, VIN: vulvar intraepithelial neoplasia, VAIN: vaginal intraepithelial neoplasia.