Table 4 Risk factors for HSIL assessed by multivariate logistic regression

Age group

 25-35

Ref

Ref

Ref

Ref

 36-45

1.46

0.88

1.98

0.2143

 46-55

1.15

1.07

1.44

0.0254

 56-65

0.78

0.52

1.16

0.4399

Education level

 Junior middle school or lower

Ref

Ref

Ref

Ref

 High school or technical secondary school

1.59

0.90

1.96

0.2416

 College and above

0.79

0.37

0.90

0.0337

Bleeding after intercourse

 No

Ref

Ref

Ref

Ref

 Yes

2.08

1.40

3.10

0.0003

Trichomonas vaginalis

 No

Ref

Ref

Ref

Ref

 Yes

2.62

1.35

5.07

0.0043

Cervical inflammation

 No

Ref

Ref

Ref

Ref

 Yes

4.22

3.39

5.26

<0.0001

Genital warts

 No

Ref

Ref

Ref

Ref

 Yes

3.89

2.54

7.70

<0.0001