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Table 1 Comparison of selective characteristics at baseline between groups of participants and nonparticipants to the follow-up.

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

Characteristics

Nonparticipants

Participants

P-value

Age (mean)

18.4 Year

18.5 Year

0.366

Smoking

26%

18%

0.062

Alcohol drinking

47%

51%

0.867

Age at menarche (mean)

13.3 Year

13.2 Year

0.199

Sexual intercourse

26%

21%

0.066

Age at first sexual intercourse (mean)

18.3 Year

17.9 Year

0.326

Lifetime multiple sexual partners

13%

12%

0.295

HPV positive

16%

13%

0.381