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Table 3 New infection of human papillomavirus (HPV) among 171 HPV-negative female students according to changes in sexual or smoking habits between baseline and follow-up. Busan, Korea

From: Acquisition of new infection and clearance of type-specific human papillomavirus infections in female students in Busan, South Korea: a follow-up study

Baseline

Follow-up

No. of women

New infection (%)

OR (95% CI)

Sexual intercourse

    

No

No

118

15 (12.7)

1.0

No

Yes

20

6 (30.0)

2.9 (1.0–8.8)

Yes

Yes, same partner

7

1 (14.3)

1.1 (0.1–10.3)

Yes

Yes, new partner

17

5 (29.4)

2.9 (0.9–9.3)

Not reported

Yes

9

3 (33.3)

3.4 (0.8–15.2)

Current smoking*

    

No

No

131

16 (12.2)

1.0

No

Yes

6

3 (50.0)

6.1 (0.9–40.9)

Yes

Yes/No

12

5 (41.7)

3.3 (0.7–14.6)

Not reported

 

22

6 (27.3)

2.8 (0.9–8.4)

  1. * ORs for changes in sexual habits were adjusted for the two age groups (years of 15–18 and 19–24); ORs for changes in smoking habits were adjusted for the two age groups and the five different categories of changes in sexual habits. OR: odds ratio; CI: confidence interval.