| CCT (n = 208) | MMT (n = 384) | Test result and P value |
---|---|---|---|
Mean age of first intoxication (SD) | 22.35 (5.79) | 23.22 (6.42) | t(590) = -1.68; p = 0.09 |
% drugs of first intoxication | |||
 Heroin | 85.58 | 80.73 | X 2(2) = 7.26; p = 0.03 |
 Opium | 10.58 | 16.41 |  |
 Other drugs | 4.81 | 2.34 |  |
Mean number of years used (SD) | 11.01 (6.22) | 13.17 (4.63) | t(590) = -5.08; p < 0.001 |
Ever reported daily heroin use (%) | 97.54 | 99.96 | X 2(1) = 3.57; p = 0.06 |
Median heroin use frequency of those who used every day (range) | 3 (0–20) | 4 (0–18) | U = 64,077; p < 0.001 |
Median monthly drug spending (range) | 4.55 mil VND (0–84 mil) | 6.20 mil VND (0–225 mil) | U = 60,171; p < 0.001 |
% heroin injection ever | 66.43 | 82.55 | X 2(1) = 30.79; p < 0.001 |
% poly drug use evera | 50.48 | 28.91 | X 2(1) = 29.99; p < 0.001 |
Mean number of drug classes used (SD) of those who were poly users | 3 (1.25) | 2 (0.82) | t(214) = 4.69; p < 0.001 |
% ever sought drug dependence treatment | 80.77 | 96.61 | X 2(1) = 55.14; p < 0.001 |
Median number of treatment episodes (range)b | 2 (1–50) | 5 (1–40) | U = 49,581; p < 0.001 |
% ever been to CCT centers | 37.98 | 49.74 | X 2(1) = 8.46; p = 0.004 |
% ever home detoxed | 66.70 | 84.40 | X 2(1) = 27.67; p < 0.001 |
% ever committed illegal behaviors | 35.20 | 30.30 | X 2(1) = 2.35; p = 0.13 |
% ever been to prison | 16.35 | 26.30 | X 2(1) = 7.59; p = 0.006 |
% overdose incident ever | 18.75 | 12.10 | X 2(1) = 3.49; p = 0.06 |