Table 2 Risk factors for HBV infection

  ○ Male

    • Monogamous marriage

40

16 (40.0)

1.00

    • Single

49

12 (24.5)

0.51

0.20–1.27

    • Polygamous marriage

11

03 (27.0)

0.56

0.12–2.44

  ○ Female

    • Monogamous marriage

81

22 (27.1)

1.00

    • Single

73

16 (22.0)

0.75

0.35–1.57

    • Polygamous marriage

19

05 (26.3)

0.95

0.30–2.97

Years since first sexual intercourse

  ○ ≤ 10

99

26 (26.3)

1.00

  ○ 11–20

48

17 (35.4)

1.53

0.73–3.23

  ○ 21–30

31

11 (35.5)

1.54

0.65–3.65

  ○ > 30

28

06 (21.4)

0.76

0.27–2.09

Use of condoms

  ○ Yes

19

06 (31.6)

1.00

  ○ No

227

64 (28.2)

1.12

0.40–3.10

Number of sexual partners

  ○ One

6

02 (33.3)

1

  ○ Two or more

102

32 (31.4)

1.20

0.21–6.83

Socio-professional activity

  ○ Civil servant

24

05 (20.8)

1.00

  ○ Small trader

10

05 (50.0)

3.80

0.78–18.50

  ○ Farmer

63

19 (30.2)

1.64

0.53–5.04

  ○ Student

74

22 (29.7)

1.60

0.53–4.84

  ○ Unemployed

28

05 (17.8)

0.80

0.20–3.28

  ○ Others**

65

18 (27.7)

1.45

0.47–4.48

Previous risk behaviour

  ○ None

71

22 (31.0)

1.00

  ○ Scarification

169

44 (26.0)

0.78

0.42–1.44

  ○ Surgery

47

12 (25.5)

0.76

0.33–1.74

  ○ Blood transfusion

30

04 (13.3)

0.34

0.10–1.10

  ○ Tattooing

31

09 (29.0)

0.91

0.36–2.29

  ○ Dental surgery

33

10 (30.3)

0.96

0.39–2.37