Characteristic

N(151)

%

Characteristic

N (151)

%

Education level

≤9 years

Over 9 years

Gender

female

male

Sex partner

No

No fixed, many

Fixed, several

Fixed and only one

Condom use status

Every time

Often

Sometimes

Rarely

Never

HBV

negative

positive

Anti-HCV

negative

positive

HIV

negative

positive

marital status

Never married

Ever married

101

50

18

133

34

5

11

101

32

13

31

15

60

84

67

27

124

132

19

97

54

66.9

33.1

11.9

88.1

22.5

3.3

7.3

66.9

21.2

8.6

20.5

9.9

39.7

55.6

44.4

17.9

82.1

87.4

12.6

64.2

35.8

Shared any injection equipment, last 1 month

No

Yes

Amphetamine use, last 1 year

No

Yes

Venereal disease

No

Yes

Smoking

No

Yes

Alcohol abuse

No

Yes

Any sexual intercourse, last 1 month

Often

Sometimes

Rarely

Never

Age at first heroin use

Below 20 y/o

21 - 30 y/o

31 - 40 y/o

Over 41 y/o

Age at first amphetamine use (n = 70)

Below 20 y/o

21 - 30 y/o

Over 41 y/o

125

26

81

70

135

16

17

134

96

55

1

1

3

146

21

82

37

11

26

31

13

82.8

17.2

53.6

46.4

89.4

10.6

11.3

88.7

63.6

36.4

0.7

0.7

2

96.6

13.9

54.3

24.5

7.3

37.1

44.3

18.6