Table 2. Multilevel Logistic Regression Estimates of Risk Factors/Cofactorsand Theory -Derived Interaction Effects on Actor Anti-HCV Positivity a , Shiraz (southern of Iran), 2011 .
| HCV State | OR (95% CI) | ||
|---|---|---|---|
| Negative | Positive | ||
| Risk Behavior (Actor- level, level 1) | |||
| Current drug use | |||
| No | 160 (62) | 98 (38) | 3.5 (2.01- 6.1) |
| yes | 13 (16.7) | 65 (83.3) | |
| Injection drug use | |||
| No | 164 (81.2) | 38 (18.8) | 60.3 (27.4- 126.5) |
| yes | 9 (6.7) | 125 (93.3) | |
| Syringe sharing | |||
| No | 168 (74.7) | 57 (25.3) | 47.5 (19.9- 113.3) |
| yes | 5 (4.5) | 106 (95.5) | |
| Razor sharing | |||
| No | 149 (73.4) | 54 (26.6) | 7.3 (4.4- 12.1) |
| yes | 24 (18) | 109 (82) | |
| Tattooing | |||
| No | 146 (76) | 46 (24) | 9.8 (5.5- 16.3) |
| yes | 27 (18.8) | 117 (81.2) | |
| Number of tattooing points | 0.37 (0) | 2.1 (1) | 1.9 (2.3- 1.5) |
| Sexual activity with non main heterosexual partner | |||
| No | 153 (66.5) | 77 (33.5) | 4.9 (2.9- 8.3) |
| yes | 18 (17.3) | 86 (82.7) | |
| Number of sexual activity with non main heterosexual partner in last month | 0 (0) | 0.35 (0) | 23.4 (23.01- 23.7) |
| Cofactors (Actor- level, level 1) | |||
| Age, years | 33.4 ± 6.75 | 38.66 ± 7.08 | 1.7 (1.1- 2.4) |
| Sex (female, 0; male, 1) | |||
| Female | 152 (90.5) | 16 (9.5) | 66.5 (33.31- 132.8) |
| male | 21 (12.5) | 147 (87.5) | |
| CD4 level | 298 ± 187.6 | 585 ± 279.8 | 0.996 (0.995- 0.997) |
| HIV state | |||
| Negative | 84 (96.6) | 3 (3.4) | 20.1 (8.8- 48.4) |
| Positive | 86 (35.1) | 159 (64.9) | |
| Had stable job | |||
| No | 33 (24.1) | 104 (75.9) | 3.9 (2.4- 6.2) |
| yes | 140 (70.4) | 59 (29.6) | |
| Lifetime incarceration (at least 7 days) | |||
| No | 163 (86.2) | 26 (13.8) | 198.3 (21.1- 1863.1) |
| yes | 10 (6.8) | 137 (93.2) | |
| Cofactors (Partner- level, level 1) | |||
| Ever had sexual transmitted disease | |||
| No | 143 (69.4) | 63 (30.6) | 4.4 (2.7- 7.2) |
| yes | 33 (27.7) | 86 (72.3) | |
| HIV state | |||
| Negative | 165 (68.5) | 7 (31.5) | 5.56 (3.3- 10) |
| Positive | 11 (12.6) | 76 (87.4) | |
| Stable job | |||
| No | 61 (31) | 136 (69) | 0.17 (0.11- 0.28) |
| yes | 118 (87.4) | 17 (12.6) | |
| Lifetime incarceration (at least 7 days) | |||
| No | 136 (93.2) | 10 (6.8) | 46.7 (23.5- 93.1) |
| yes | 43 (23.1) | 143 (76.9) | |
| couple-level, level 2 | |||
| No condom use in sexual activity with main heterosexual partner | 42 (25) | 1.46 (1.458- 1.462) | |
| Theory-derived interaction effects | |||
| Actor IDU moderated by Actor lifetime incarceration | 0.019 (0.002- 0.18) | ||
| Actor tattooing moderated by Actor HIV positive | 23.42 (23.11- 23.73) | ||
aOther independent variables which had not significant association (P > 0.2) with actor HCV status (were not show in this table) are as follows: Actor level: Condom use in sexual activity with non-main heterosexual partner, Current condom use with casual partner, drug use at sexual activity with non-main heterosexual partner time, history of blood transfusion, history of blood transfusion before 1992, number of blood transfusion, age of the first sexual activity, age of the first sexual activity with main heterosexual partner, age of the first drug use, age of the first IDU, total leukocyte count, sexual transmitted disease, education level, homosexual activity Partner level: age, age of the first sexual activity, age of the first drug use, age of the first IDU, CD4 level, total leukocyte count, education level Couple level: razor sharing, drug use at sexual activity with main heterosexual partner time, number of sexual activities with main partner in previous month, Duration of sexual relationship, age difference between them Theory-derived interaction effects: Actor IDU, moderated by Actor HIV positive, sex; Actor tattooing moderated by sex, Actor lifetime incarceration; Sexual activity with non main heterosexual partner moderated by Actor HIV positive, sex; Actor no. of sexual acts with main partner in previous month moderated by Actor HIV positive, Partner HCV positive, Partner HIV positive.