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Table 2 Risk factors associated with overall HR-HPV infection at baseline by age group

From: A prospective study of age trends of high-risk human papillomavirus infection in rural China

Age-group

Risk factors*

HPV positive, n (%)

Multivariate

   

OR (95% CI)

25-40 (n = 2587)

Household income (Yuan) §

p = 0.023

≤3000

91 (11.2)

1.0

3001-5000

79 (10.1)

0.96 (0.69-1.34)

≥5001

125 (12.7)

1.41 (1.04-1.92)

Marital status

 

p = 0.007

Married

289 (11.3)

1.0

Others

7 (29.2)

3.48 (1.40-8.66)

Age at first menstruation period (years) §

p = 0.027

≤14

140 (10.5)

1.0

15-16

110 (11.6)

1.06 (0.80-1.40)

≥17

46 (15.3)

1.65 (1.14-2.40)

Age at first pregnancy (years) §

p = 0.004

≤20

97 (14.5)

1.0

21-23

136 (11.0)

0.77 (0.57-1.03)

≥24

55 (8.5)

0.54 (0.38-0.78)

41-48 (n = 2530)

Age at first sexual intercourse (years) §

 

p < 0.001

≤19

74 (21.1)

1.0

20-22

173 (10.9)

0.49 (0.35-0.67)

≥23

66 (11.2)

0.52 (0.36-0.77)

49-65 (n = 2280)

No. of lifetime sex partners §

 

p = 0.006

1

306 (15.0)

1.0

≥2

54 (22.0)

1.58 (1.14-2.20)

Menopausal status §

 

p = 0.008

No

48 (11.3)

1.0

Yes

311 (16.8)

1.55 (1.12-2.15)

  1. NOTE: *Only those risk factors of statistical significance in multivariate analysis which was adjusted for study sites, education level, oral contraceptive history, number of sex partners in the past 6 months, number of live births were shown. Age was categorized by tertiles at baseline. Bold type indicates statistical significance (p < 0.05).§Missing values were excluded in the analysis. HPV = human papillomavirus; OR = odds ratio; CI = confidence interval.