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Table 4 Multivariate association of factors with prevalent infection of any HPV and any HR-HPV

From: Prevalence and correlates of HPV among women attending family-planning clinics in Thailand

Variable Adjusted PR (95%CI)**  
Any HPV Any HR-HPV HPV 52 HPV 52 (w/o HPV 16)
Age at enrollment:     
 <26 1.0 1.0 1.0 1.0
 26-30 0.89 (0.68, 1.16) 0.73 (0.49, 1.06) 0.99 (0.46, 2.11) 0.99 (0.46, 2.11)
 31-33 1.02 (0.77, 1.37) 0.72 (0.47, 1.09) 0.51 (0.19, 1.35) 0.51 (0.19, 1.35)
 34-38 0.95 (0.70, 1.29) 0.73 (0.48, 1.13) 0.35 (0.12, 1.03) 0.35 (0.12, 1.03)
Cumulative use of COCs*:     
 Never 1.0 1.0 1.0 1.0
 <4 years 1.17 (0.87, 1.58) 1.06 (0.71, 1.59) 0.50 (0.22, 1.10) 0.49 (0.22, 1.10)
 4-6 years 1.21 (0.87, 1.69) 1.24 (0.79, 1.94) 1.03 (0.46, 2.32) 1.03 (0.46, 2.33)
 >6 years 2.03 (1.39, 2.96) 2.47 (1.45, 4.19) 1.16 (0.39, 3.45) 1.16 (0.39, 3.45)
# lifetime partners     
 1 1.0 1.0 1.0 1.0
 2 1.66 (1.29, 2.14) 1.21 (0.80, 1.82) 1.05 (0.43, 2.57) 1.05 (0.43, 2.57)
 3 1.54 (1.04, 2.26) 1.25 (0.69, 2.28) 1.99 (0.67, 5.89) 1.99 (0.67, 5.89)
 ≥4 2.02 (1.54, 2.66) 1.98 (1.35, 2.91) 1.97 (0.87, 4.45) 1.97 (0.87, 4.45)
Primary partner had sex w/others:     
 No 1.0 1.0 1.0 1.0
 Yes 1.42 (1.05, 1.91) 1.35 (0.89, 2.04) 2.32 (0.98, 5.50) 2.32 (0.98, 5.50)
 Don’t Know 1.29 (1.02, 1.64) 1.34 (0.94, 1.91) 1.48 (0.69, 3.15) 1.48 (0.69, 3.15)
Chlamydia infection ever:     
 No 1.0 1.0 1.0 1.0
 Yes 1.32 (1.04, 1.66) 1.74 (1.27, 2.38) 1.25 (0.54, 2.92) 1.25 (0.54, 2.92)
Bacterial Vaginosis at enrollment:     
 No 1.0 1.0 1.0 1.0
 Yes 2.11 (1.54, 2.91) 1.98 (1.28, 3.06) 2.28 (0.96, 5.39) 2.28 (0.96, 5.39)
  1. *COC = Combined oral contraception.
  2. **All variables mutually adjusted for in final model.