TABLE 2.
Baseline characteristics of the population.
| PWID with psychiatric conditions (n = 130) | Control population (n = 136) | p-value1 | |
| Socio-demographic data | |||
| Sex, Male and transgender n(%) | 120 (92.3) | 127 (93.4) | 0.73 |
| Age, mean(SD) | 45.3 (8.5) | 40.9 (7.7) | <0.001 |
| Heroin, number of years practicing injection | |||
| <5 years | 7 (5.4) | 9 (6.6) | 0.01 |
| 5 to 10 years | 20 (15.4) | 43 (31.6) | |
| 10 to 15 years | 36 (27.7) | 34 (25.0) | |
| ≥15 years | 67 (51.5) | 50 (36.8) | |
| Heroin, frequency of injection during the month preceding the interview | 1.00 | ||
| Less than once per day | 43 (33.1) | 45 (33.1) | |
| Daily | 87 (66.9) | 91 (66.9) | |
| Methamphetamine, Positive urine test | 38 (29.2) | 37 (27.2) | 0.71 |
| Methamphetamine, number of years of consumption | 0.11 | ||
| No consumption | 28 (21.7) | 45 (33.1) | |
| <2 years | 26 (20.2) | 19 (14.0) | |
| 2 to 5 years | 33 (25.6) | 38 (27.9) | |
| ≥5 years | 42 (32.6) | 34 (25.0) | |
| Methamphetamine, frequency of consumption during the month preceding the interview | 0.73 | ||
| <4 times a month | 100 (76.9) | 107 (78.7) | |
| ≥4 times a month | 30 (23.1) | 29 (21.3) | |
| Methadone (Positive urine test) | 71 (54.5) | 85 (62.5) | 0.19 |
| Excessive alcohol consumption | 45 (34.6) | 32 (23.5) | 0.05 |
| Poly substance use | 0.18 | ||
| 0 | 24 (18.5) | 28 (20.6) | |
| 1 | 58 (44.6) | 72 (52.9) | |
| ≥2 | 48 (36.9) | 36 (26.5) | |
| Viral infections | |||
| Positive HCV RNA | 81 (62.3) | 82 (60.3) | 0.74 |
| Positive HIV serology | 47 (36.1) | 57 (41.9) | 0.34 |
| HIV pos. receiving ARV treatment | 33 (70.2) | 43 (75.4) | 0.26 |
1Chi-squared test or t-test; HCV, hepatitis C; and HIV, human immunodeficiency virus.