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Table 1 Socio-demographic characterestics of injection drug users according to HIV serostatus, and odds ratios associated with HIV seropositivity (n = 248)

From: HIV prevalence and factors associated with HIV infection among male injection drug users under 30: a cross-sectional study in Long An, Vietnam

Characteristics

HIV (+) (n = 80)

HIV (-) (n = 168)

p-value* (χ2 test)

OR†

95%CI

p-value

Age (years)

      

   14–17

5 (6.3)

23 (13.7)

 

1

(reference)

 

   18–20

32 (40.0)

51 (30.4)

0.22

2.89

0.99 – 8.36

0.051

   21–24

31 (38.8)

64 (38.1)

 

2.23

0.77 – 6.42

0.14

   25–29

12 (15.0)

30 (17.9)

 

1.84

0.57 – 5.97

0.31

Educational level

      

   High school (10–12 years) or more

15 (18.8)

52 (31.0)

 

1

(reference)

 

   Secondary (6–9 years)

45 (56.3)

84 (50.0)

0.12

1.97

0.99 – 3.93

0.053

   Illiteracy/primary (1–5 years)

20 (25.0)

32 (19.0)

 

2.42

1.07 – 5.50

0.035

Marital status

      

   Currently married

14 (17.5)

23 (13.7)

0.45

1

(reference)

 

   Currently not married‡

66 (82.5)

145 (86.3)

 

0.69

0.32 – 1.49

0.34

  1. n indicates number; OR, odds ratio; CI, confidence interval.
  2. *: Differences in proportions between HIV (+) IDUs and HIV (-) IDUs were tested by χ2 tests.
  3. †: Age-category-adjusted odds ratio for the characteristics except 'Age'.
  4. ‡: Currently not married category includes never married (n = 206) and divorced/separated (n = 5).
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