Table 3 Risk factors for HSIL assessed by univariate logistic regression

Age group

 25-35

Ref

Ref

Ref

Ref

 36-45

1.37

0.82

1.84

0.6521

 46-55

1.15

1.01

3.98

0.0302

 56-65

0.57

0.40

1.12

0.3601

Education level

 Junior middle school or lower

Ref

Ref

Ref

Ref

 High school or technical secondary school

1.68

0.98

2.04

0.3112

 College and above

0.54

0.10

0.87

0.0261

Work or not

 Yes

Ref

Ref

Ref

Ref

 no

1.03

0.85

1.25

0.7356

Contraceptive used

 Condom

Ref

Ref

Ref

Ref

 Contraceptive pills

1.15

0.64

2.06

0.9484

 Intrauterine device use

1.29

0.94

1.59

0.9442

 Hypoderm contraceptive implants

1.13

0.88

2.14

0.9559

 Security period

0.59

0.19

1.85

0.9720

 Coitus interruptus

1.42

0.83

1.97

0.9406

 No contraceptive measures

0.90

0.68

1.20

0.9568

Bleeding after intercourse

 No

Ref

Ref

Ref

Ref

 Yes

2.60

1.75

3.86

<0.0001

Trichomonas vaginalis

 No

Ref

Ref

Ref

Ref

 Yes

2.55

1.32

4.93

0.0055

Yeast infection

 No

Ref

Ref

Ref

Ref

 Yes

1.14

0.37

3.54

0.8248

Bacterial vaginosis

 No

Ref

Ref

Ref

Ref

 Yes

1.31

0.42

4.08

0.6389

Cervical inflammation

 No

Ref

Ref

Ref

Ref

 Yes

4.27

3.45

5.28

<0.0001

Genital warts

 No

Ref

Ref

Ref

Ref

 Yes

4.41

2.82

6.19

<0.0001

Menstrual cycle

1.00

0.99

1.01

0.9911

Menstrual period

1.02

0.97

1.08

0.4526

Gravity

0.99

0.92

1.06

0.7287

Parity

0.74

0.65

0.86

<0.0001

Number of abortions

0.98

0.63

1.53

0.9225