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Table 4 Sex-specific univariate and multivariate analyses of factors associated with syphilis infection

From: Prevalence and associated factors of Treponema pallidum infection in a rural area of southwestern China

Variables

Male (N = 608)

Female (N = 1700)

Prevalence (%)

cOR (95% CI)

aOR (95% CI)

Prevalence (%)

cOR (95% CI)

aOR (95% CI)

Age group (years)

 14–24

0

-

 

1.3

Ref.

 

 25–34

1.0

0.95(0.09–10.59)

 

1.8

1.34 (0.36–6.64)

 

 35–44

2.2

2.01(0.24–16.90)

 

1.6

1.23 (0.34–5.96)

 

 45–54

0.6

0.65(0.03–8.46)

 

0.8

0.61 (0.10–3.58)

 

 ≥ 55

1.1

Ref.

 

0.5

0.47 (0.02–4.07)

 

Ethnicity

 Yi

0

  

0

  

 Han and others

1.2

  

1.3

  

Education

 Illiteracy

2.3

Ref.

 

1.2

Ref.

 

 Primary school

0

–

 

1.4

1.13 (0.31–3.13)

 

 High school and above

0.6

0.25(0.03–2.00)

 

1.8

1.56 (0.23–5.64)

 

Occupation

 Students

0

  

0

–

 

 Farmers

1.1

  

1.2

0.36(0.05–2.81)

 

 Others

0

  

0.1

Ref.

 

Ever working away from home

 No

0.6

0.59 (0.02–3.25)

 

1.4

Ref.

 

 Yes

1.2

Ref.

 

1.3

0.88 (0.32–3.14)

 

Annual income

 < 1000

0

  

0.7

Ref.

 

 1000–2999

1.0

  

1.6

2.07 (0.53–14.82)

 

 3000–4999

2.6

  

1.0

1.30 (0.24–10.57)

 

 5000–9999

1.5

  

1.1

2.15 (0.32–18.66)

 

 ≥ 10,000

0

  

1.1

2.15 (0.32–18.66)

 

Marital status

 Ever married

1.4

  

1.4

Ref.

 

 Never married

0

  

0.4

0.32 (0.01–1.52)

 

Spouse syphilis

 No or unknown

1.0

Ref.

 

1.2

Ref.

Ref.

 Yes

20.0

26.54 (0.91–217.16)

 

50.0

78.04 (1.96–3015.11) **

126.66 (7.58–2122.94) **

Ever using injection drugs

 No

0.7

Ref.

Ref.

1.3

–

 

 Yes

5.4

7.94 (1.91–29.32) **

9.42 (2.47–35.87) **

0

–

 

Having multiple sexual partners

 No

0.8

Ref.

 

1.1

Ref.

 

 Yes

2.1

2.55 (0.62–9.27)

 

2.6

2.41 (0.84–5.98)

 

Condom use

 Always or occasionally

1.5

Ref.

 

2.5

Ref.

 

 Never

1.2

0.79 (0.20–3.98)

 

0.8

0.34 (0.12–0.90)

 

Ever having blood transfusion

 No or unknown

1.1

  

1.2

Ref.

Ref.

 Yes

0

  

10.5

10.32 (1.43–39.98) *

10.51 (1.58–41.21) **

HIV infection

 No

1.0

Ref.

 

1.2

Ref.

 

 Yes

2.5

2.73 (0.37–11.42)

 

3.1

2.78 (0.40–9.89)

 

HBV infection

 No

1.1

Ref.

 

1.1

Ref.

Ref.

 Yes

1.3

1.3 (0.06–7.68)

 

4.2

4.11 (1.31–10.71) *

4.19 (1.35–10.93) **

HCV infection

 No

0.7

Ref.

Ref.

1.2

Ref.

 

 Yes

7.4

11.18 (2.67–41.63) **

13.28 (3.20–51.70) **

11.8

11.42 (1.58–44.99) *

8.93 (0.82–96.97)

  1. *P < 0.05, **P < 0.01