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. 2015 Dec 18;15:1255. doi: 10.1186/s12889-015-2604-6

Table 1.

Socio-demographic, injection drug use, HIV prevalence and care and environmental characteristics of current injection drug users participating and the prevalence of self-reported non lethal overdose within the last 12 months from cross sectional studies in Kohtla-Järve, Estonia (in 2012) and St Petersburg, Russia (in 2012 – 2013)

Kohtla-Järve (Estonia),
N = 588
St Petersburg (Russia),
N = 811
Characteristics n % Overdose last 12 months (%) n % Overdose last 12 months (%)
Socio-demographic indicators
Age p = 0.134 p = 0.337
 29 or less 295 50 % 25 % 245 30 % 18 %
 30 or more 293 50 % 30 % 566 70 % 15 %
Gender p = 0.833 p = 0.423
 Male 435 74 % 27 % 631 78 % 16 %
 Female 152 26 % 28 % 180 22 % 18 %
Main source of income (last 6 months) p = 0.239 p = 0.021
 Work (full/part time) 192 33 % 23 % 590 73 % 14 %
 Social benefits 263 45 % 30 % 22 3 % 14 %
 Other 127 22 % 31 % 199 25 % 23 %
Drug use characteristics
Duration of injecting p < 0.001 p = 0.008
 < = 9 years 230 39 % 16 % 170 21 % 9 %
 = > 10 years 356 61 % 35 % 640 79 % 18 %
Frequency of injecting (last 4 weeks) p < 0.001 p < 0.001
 < Daily 447 76 % 24 % 524 65 % 11 %
 Daily + 139 24 % 40 % 287 35 % 26 %
Main drug injected (last 4 weeks) p < 0.001 p = 0.116
 Amphetamine 195 35 % 14 % 27 3 % 4 %
 Fentanyl 350 62 % 34 % 4 0 % 25 %
 Heroin 1 0 % 563 69 % 18 %
 Methadone 0 0 % 217 27 % 14 %
Injecting multiple drugs (last 4 weeks) p = 0.124 p = 0.003
 No 378 64 % 25 % 495 61 % 8 %
 Yes 210 36 % 31 % 316 39 % 21 %
Non-injecting drug use (last 4 weeks) p = 0.575 p = 0.037
 No 324 57 % 27 % 755 93 % 15 %
 Yes 246 43 % 29 % 56 7 % 27 %
Sharing (last 4 weeks) p < 0.001 p < 0.001
 No 492 85 % 24 % 277 34 % 7 %
 Yes 88 15 % 49 % 534 66 % 21 %
Problem alcohol use p = 0.009 p < 0.001
 No 247 42 % 22 % 275 34 % 8 %
 Yes 341 58 % 32 % 536 66 % 21 %
Mental health (MHI 5) p = 0.003 p < 0.001
 > = 52 362 62 % 23 % 536 66 % 13 %
 <52 221 38 % 35 % 275 34 % 23 %
Structural (environmental) characteristics
Homelessness (current) p = 0.619 p = 0.454
 No 583 99 % 27 % 798 98 % 16 %
 Yes 5 1 % 40 % 13 2 % 14 %
Ever been in prison p < 0.001 p = 0.368
 No 266 45 % 19 % 537 66 % 17 %
 Yes 322 55 % 35 % 274 34 % 15 %
Main source of syringes (last 4 weeks) p = 0.0018 p = 0.0121
Needle and syringe program (NSP) 445 77 % 30 % 119 15 % 11 %
 Pharmacy 76 13 % 16 % 615 76 % 19 %
 Other 26 5 % 35 % 30 4 % 10 %
 None 29 5 % 7 % 46 6 % 4 %
Currently receiving drug treatment p > 0.9 p = 0.133
 No 216 68 % 32 % 563 97 % 18 %
 Yes 102 32 % 32 % 19 3 % 32 %
HIV infection and care
HIV infected p = 0.013 p = 0.021
 No 218 37 % 22 % 359 44 % 13 %
 Yes 370 63 % 31 % 452 56 % 19 %
Currently on ART p = 0.342 p = 0.051
 No 247 67 % 33 % 403 90 % 20 %
 Yes 123 33 % 28 % 47 10 % 9 %