Table 2 Multivariate analyses of the association between cervical human papillomavirus infection and selected subjects’ characteristics

Age group (years)

 18

308

1.7

1.1–3.1

 19

339

2.2

1.4–3.7

 20–21

452

2.1

1.3–3.4

 22–25

471

1.9

1.2–3.2

 26–35

319

1.1

0.7–1.9

 26–45

326

0.7

0.4–1.2

 46–55

486

0.8

0.5–1.3

 56–65

454

1

reference

P-value for trend

<0.001

Residential area

 Rural

329

1

reference

 Suburban

393

1.3

0.8–2.1

 Urban

2428

1.5

1.0–2.2

 Unknown

5

-

-

P-value for trend

0.03

Country of birth

 Spain

2886

1

reference

 Other countries

269

1.7

1.3–2.4

Marital status

 Married

1158

1

reference

 Single

1259

2.1

1.4–3.1

 Cohabiting

549

1.8

1.2–2.6

 Divorced/Separated

127

2.3

1.4–3.4

 Widowed

62

3.7

1.7–7.7

Level of education attainment

 No formal education

178

1

reference

 Primary completed

648

0.9

0.5–1.5

 Secondary completed

1286

0.9

0.5–1.4

 University or higher

1040

0.7

0.4–1.1

 Unknown

3

-

-

P-value for trend

0.02

Tobacco smoking status

 Never smoked

1599

1

reference

 Ex-smoker

439

1.0

0.7–1.3

 Current smoker

1116

1.6

1.3–1.9

 Unknown

1

-

-

P-value for trend

<0.001

Ever use of condoms

 Never used

650

1

reference

 Ex or current user

2505

0.9

0.6–1.1

Systematic condom use in last 12 months^*

 No

1947

1

reference

 Yes

1031

0.8

0.6–1.0

 Unknown

12

-

-

Lifetime number of sexual partners

 1

1560

1

reference

 2

577

1.5

1.1–2.1

 3

397

3.3

2.5–4.5

 ≥4

609

4.1

3.1–5.4

 Unknown

12

-

-

P-value for trend

<0.001

Age at first sexual intercourse (years)

 ≤14

125

0.5

0.2–1.2

 15–16

685

0.6

0.3–1.2

 17–18

1097

0.7

0.3–1.4

 19–20

492

0.8

0.4–1.6

 21–25

595

1.0

0.5–2.1

 ≥26

145

1

reference

 Unknown

16

-

-

P-value for trend

0.003

Current partner circumcised

 No

2366

1

reference

 Yes

369

0.8

0.6–1.1

 Unknown

420

-

-

History of genital warts

 No

3061

1

reference

 Yes

87

3.2

2.0–5.2

 Unknown

7

-

-