Skip to main content

Table 6 Factors significantly associated with an HCV test in univariate tests and binary logistic regression (forward stepwise selection)

From: Associating conditional cash transfer to universal access to treatment could be the solution to the HCV epidemic among drug users (DUs)

HCV screening % screening % total Sig Odds ratio 95% CI odds ratio
Lower Upper
Injection    0.002 0.378 0.213 0.672
 Yes 87.2 62.1     
 No 73.4 37.9     
NSS    < 0.001 5.363 2.476 14.358
 Yes 94.7 34.9     
 No 75.1 65.1     
Craving    < 0.0001 4.392 1.819 10.606
 Yes 93.7 29.1     
 No 77.2 70.9     
Police    < 0.0001 9.344 3.257 26.807
 Yes 96.3 38.3     
 No 73.6 61.7     
GP source    < 0.0001 5.231 2.735 10.005
 Yes 92.2 55.0     
 No 69.4 45.0     
SDU source    0.008 3.810 1.276 6.188
 Yes 91.1 27.5     
 No 78.5 72.5     
SDU or GP    < 0.0001 6.772 3.566 12.861
 Yes 92.6 61.8     
 No 65.7 38.2     
Prison    < 0.0001 7.833 3.555 17.261
 Yes 94.7 49.5     
 No 69.7 50.5     
Logistic regression B Wald Sig Odds ratio 95% CI odds ratio
Lower Upper
All: 327 cases
 Age 0.099 12.764 < 0.0001 1.100 1.044 1.159
 Police − 1.338 7.060 0.008 0.262 0.098 0.704
 OST − 1.750 9.311 0.002 0.174 0.057 0.535
 GPsource − 1.014 6.347 0.012 0.362 0.165 0.798
 Prison − 1.073 4.748 0.029 0.342 0.130 0.898
 Constant 1.593 2.051 0.152 4.921   
  1. Hosmer and Lemeshow test, 0.101; CC—screening+, 94.8%; screening−, 44.8%; all, 85.8%
  2. Logistic regression odds ratios—police: absent/present, injection: NSS− and no injection/NSS+, OST: absent/present, GP source: absent/present
  3. Injection history of injection, NSS needle and syringe sharing, Craving NSS at a time of craving, Police police crackdown on injections, GP source GP as source of health information, SDU service for drug users, GP medical practice of a general practitioner, OST opiate substitution therapy, prison having served a prison sentence, CC correctly classified