Table 6 Univariate and multivariate associations with detection of human papillomavirus (HPV) types 16 or 18, all women ≤40 years (n = 2152)

Indigenous^a

   Yes

13.1%

1.1 (0.8 to 1.4)

0.64

0.8 (0.6 to 1.1)

0.2

   No

12.4%

Smoking^b

   Yes

16.0%

1.6 (1.2 to 2.0)

0.001

1.4 (1.1 to 1.9)

0.01

   No

10.9%

Age, years^c

-

0.879 (0.858 to 0.900)

< 0.001

0.884 (0.862 to 0.906)

< 0.001

Age, 5-year bands

28.4%

10.9 (5.9 to 20)

< 0.001

Modeled as continuous variable as above

   < 21 years

18.0%

6.1 (3.3 to 11)

   21 to 25 years

12.1%

3.8 (2.1 to 7.0)

   26 to 30 years

5.6%

1.6 (0.8 to 3.2)

   31 to 35 years

3.5%

Ref

HC^d

   Yes

17.4%

2.0 (1.5 to 2.6)

< 0.001

1.7 (1.3 to 2.2)

< 0.001

   No

9.6%