Factors

Participants who injected drugs in last 3 months

Unadjusted OR (95% CI)

P- value

Adjusted OR (95% CI)

P-
value

N (%)

Age

10 (20.8)

0.04

≤20 years old

1

>20 years old

163 (35.8)

2.1 (1.0, 4.4)

Sex

53 (27.2)

<0.01

<0.01

Female

1

1

Male

120 (38.8)

1.7 ( 1.2, 2.5)

1.9 (1.2, 3.2)

Ethnicity

<0.01

Han majority

104 (44.6)

1

Yi orother minorities

69 (25.5)

0.4 (0.3, 0.6)

Year of schooling

<0.01

≤6 years

72 (26.7)

1

>6 years

101(43.2)

2.0 (1.4, 3.0)

Currently employed

0.11

No

119 (32.3)

1

Yes

54 (40.0)

1.4 (0.9, 2.1)

Marital status

0.03

Currently married

42 (27.3)

1

Other

131 (37.4)

1.6 (1.1, 2.4)

Personal annual income (US $)

<0.01

≤1400

66 (26.9)

1

>1400

107 (41.3)

1.9 (1.3, 2.8)

Duration of drug use

<0.01

< 6.0 years

74 (25.4)

1

≥6.0 years

99 (46.5)

2.5 (1.7, 3.7)

Primary partner ever used drugs

<0.01

<0.01

No

138 (31.2)

1

1

Yes

35 (57.4)

3.0 (1.7, 5.1)

3.3 (1.7, 6.5)

Frequency of orally using heroin in last 3 months

<0.01

<0.01

<7 times/week

91 (51.4)

1

1

≥7 times/week

82 (25.1)

0.3 (0.2, 0.5)

0.3 (0.2, 0.5)

Currently participating in MMT

0.97

No

164 (34.3)

1

Yes

9 (34.6)

1.0 (0.4, 2.3)

Ever had HIV test

<0.01

No

58 (25.6)

1

Yes

115 (41.5)

2.1 (1.4, 3.0)

Had unprotected sex with a primary sex partner in last 30 days

<0.01

No

84 (28.9)

1

Yes

89 (41.8)

1.8 (1.2, 2.6)

Had unprotected sex with non-primary sex partners in last 30 days

<0.01

<0.01

No

1

1

Yes

55 (57.3)

3.3 (2.1, 5.2)

2.7 (1.6, 4.6)

Paid money for sex or exchanged sex for money in last 6 months

<0.01

No

127 (30.2)

1

Yes

46 (55.4)

2.9 (1.8, 4.7)

Ever had more than  one episode of detoxification

<0.01

<0.01

No

50 (20.1)

1

1

Yes

123 (48.2)

3.7 (2.5, 5.5)

3.7 (2.3, 6.0)

Ever participated in HIV prevention program

<0.01

0.06

No

68 (24.5)

1

1

Yes

105 (46.5)

2.7 (1.8, 3.9)

1.6 (1.0, 2.5)