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. Author manuscript; available in PMC: 2010 May 15.
Published in final edited form as: AIDS. 2009 May 15;23(8):997–1004. doi: 10.1097/QAD.0b013e32832a594e

Table 1.

Demographics and risk behaviors at baseline stratified by HIV status of injection drug users enrolled in the Madras Injection Drug Users and AIDS Cohort Study cohort, Chennai, India (n = 1158)

Variable Entire cohort (n = 1158) HIV positivea (n = 293) HIV negativea (n = 865)
[0,1–4]Age
 Median (IQR) 35 (29 – 40) 35 (30 – 38) 35 (29–40)
[0,1–4]Marital statusb
 Married or live-in partner 745 (64.3) 161 (55) 584 (67.5)
 Single 356 (30.7) 105 (35.8) 251 (29)
 Separated 41 (3.5) 22 (7.5) 19 (2.1)
 Divorced/widowed 16 (1.4) 5 (1.7) 11 (1.3)
[0,1–4]Highest level of education
 None 323 (27.9) 87 (29.7) 236 (27.3)
 Primary 393 (33.9) 101 (34.5) 292 (33.8)
 Secondary 295 (25.5) 74 (25.3) 221 (25.5)
 High school/University/professional 147 (12.7) 31 (10.6) 116 (13.4)
[0,1–4]Frequency of alcohol consumptionb
 Never 244 (21.1) 93 (31.7) 151 (17.5)
 Light (≤2 drinks/day) 684 (59.1) 166 (56.7) 518 (59.9)
 Heavy (>3 drinks/day) 230 (19.9) 34 (11.6) 196 (22.6)
[0,1–4]Years of injection drug useb
 ≤1 year 78 (6.7) 7 (2.4) 71 (8.2)
 Greater than 1 – 5 years 330 (28.5) 57 (19.5) 273 (31.6)
 Greater than 5 – >10 years 307 (26.5) 87 (29.7) 220 (25.4)
  >10 years 443 (38.3) 142 (48.5) 301 (34.8)
[0,1–4]Frequency of injection in prior monthb
 None 281 (24.3) 57 (19.5) 224 (25.9)
 1 – 30 times 688 (59.4) 163 (55.6) 525 (60.7)
 >30 times 189 (16.3) 73 (24.9) 116 (13.4)
[0,1–4]Drugs injected in prior monthb
 None 281 (24.3) 57 (19.5) 224 (2.6)
 Heroin only 609 (52.6) 199 (67.9) 410 (47.4)
 Buprenorphine only 175 (15.1) 16 (5.5) 159 (18.4)
 Heroin and buprenorphine 93 (8.0_ 21 (7.2) 72 (8.3)
[0,1–4]Injected at dealers place in prior monthb
 No 1028 (88.8) 239 (81.6) 789 (91.2)
 Yes 130 (11.2) 54 (18.4) 76 (8.8)
[0,1–4]Incarceration in prior 6 months
 No 1010 (87.2) 248 (84.6) 762 (88.1)
 Yes 148 (12.8) 45 (15.4) 103 (11.9)
[0,1–4]Sexual intercourse in prior monthb
 No 636 (54.9) 204 (69.6) 432 (49.9)
 Yes 522 (45.1) 89 (30.4) 433 (50.1)

IQR, interquartile range.

a

All numbers reported represent n (%) unless otherwise specified.

b

Statistically significant (P-value<0.05).