Table 3:
Predictors of HCV infection and HIV–HCV co-infection in multivariate logistic regression in coastal Kenya and Nairobi
| Coastal Kenya | Nairobi | |||
|---|---|---|---|---|
| OR (95% CI) | p value | OR (95% CI) | p value | |
| HCV infection | ||||
| Age, years* | 1·02 (0·81–1·28) | 0·8651 | 1·05 (0·85–1·29) | 0·6459 |
| Male (vs female) | 0·65 (0·37–1·17) | 0·1446 | 0·48 (0·27–0·86) | 0·0138 |
| Ever incarcerated (vs never incarcerated) | 2·88 (1·70–5·13) | <0·0001 | 1·77 (0·92–3·61) | 0·0871 |
| PWID social network size* | 0·94 (0·76–1·15) | 0·0582 | 1·16 (1·00–1·32) | 0·0534 |
| Years injecting* | 2·29 (1·86–2·86) | <0·0001 | 1·47 (1·19–1·82) | 0·0004 |
| Number of injections in the past month* | 1·63 (1·33–2·01) | <0·0001 | 1·32 (1·11–1·58) | 0·0016 |
| Used same syringe more than twice (yes vs no) | 1·30 (0·60–2·74) | 0·4978 | 1·59 (0·57–3·88) | 0·3532 |
| Regular use of syringe with detachable needle (vs regular use of insulin syringe) | 1·16 (0·61–2·30) | 0·6564 | 3·47 (1·56–7·36) | 0·0029 |
| Receptive needle sharing at last injection (yes vs no) | 3·12 (1·03–9·58) | 0·0446 | 0·31 (0·01–2·59) | 0·3461 |
| Receptive cooker sharing at last injection (yes vs no) | 4·55 (1·77–12·03) | 0·0018 | 0·63 (0·32–1·18) | 0·1521 |
| HIV-HCV co-infection | ||||
| Age, years* | 0·87 (0·59–1·24) | 0·4410 | 1·00 (0·72–1·36) | 0·9962 |
| Male (vs female) | 0·32 (0·16–0·70) | 0·0048 | 0·44 (0·21–1·01) | 0·0530 |
| Ever incarcerated (vs never incarcerated) | 2·69 (1·17–7·22) | 0·0184 | 1·71 (0·68–4·83) | 0·2625 |
| PWID social network size* | 0·76 (0·53–1·02) | 0·0685 | 1·20 (0·99–1·40) | 0·0635 |
| Years injecting* | 2·10 (1·58–2·80) | <0·0001 | 1·46 (1·09–1·97) | 0·0122 |
| Number of injections in the past month* | 1·11 (0·85–1·45) | 0·4412 | 1·05 (0·79–1·36) | 0·7250 |
| Used same syringe more than twice (yes vs no) | 2·97 (1·23–6·77) | 0·0165 | 2·51 (0·64–7·37) | 0·1665 |
| Regular use of syringe with detachable needle (vs regular use of insulin syringe) | 0·78 (0·33–2·09) | 0·6004 | 2·28 (0·59–6·62) | 0·2074 |
| Receptive needle sharing at last injection (yes vs no) | 5·75 (1·74–19·97) | 0·0040 | 0·53 (0·01–4·69) | 0·6385 |
| Receptive cooker sharing at last injection (yes vs no) | 4·34 (1·43–12·33) | 0·0108 | 1·17 (0·46–2·69) | 0·7270 |
Western Kenya was excluded from these analyses because the prevalence of HCV was too low to assess correlates. HCV=hepatitis C virus. OR=odds ratio. PWID=people who inject drugs.
*
For continuous variables, ORs are per standard deviation increase in that variable.