Table 2 The associations of HPV, family history of cancer, cigarette smoking, alcohol drinking, BMI, No. full-term pregnancies, HCV, HBV infection status with the cervical cancer risk

HPV

 HPV-negative

91.6

1(reference)

1(reference)

 HPV-positive

8.4

55.2

40.6–75.1

 < 0.001

57.5

41.8–79.2

Family history of cancer

 No

97.7

1(reference)

 Yes

2.3

0.5

0.2–1.1

0.106

Cigarette smoking

 No

99.9

1(reference)

 Yes

0.1

4

0.4–36.6

0.214

Alcohol drinking

 No

100

1(reference)

 Yes

0

–

–

–

BMI

  < 18.5

8

1(reference)

 18.5–25

68.4

0.9

0.6–1.2

0.438

 25–30

19.5

0.8

0.5–1.2

0.215

  > 30

4.2

0.6

0.3–1.0

0.061

No.full-term pregnancies

 0

11.1

1(reference)

1(reference)

 1

43.7

1.9

1.2–2.8

0.004

1.7

0.9–3.2

 2

31.4

3.9

2.5–6.0

 < 0.001

4.1

2.2–7.8

 3

7.5

5.7

3.4–9.6

 < 0.001

7

3.3–14.7

  > 3

6.3

6.4

3.7–11.1

 < 0.001

4.1

1.8–9.3

HCV markers

 Anti-HCV-negative

100

1(reference)

 Anti-HCV-positive

0

–

–

–

HBV infection status

 HBsAg-negative/anti-HBc-negative^a

88.3

1(reference)

1(reference)

 HBsAg-positive/anti-HBc-positive^b

4.4

1.6

1.0–2.4

0.041

1.3

0.7–2.6

 HBsAg-negative/anti-HBc-positive^c

7.3

1.7

1.2–2.4

0.001

1.6

0.9–2.6