Table 1.
Demographic characteristics and history of drug use among three different groups.
| Variables | Opiates (N = 285) | MA* (N = 112) | Healthy‡ (N = 79) |
|---|---|---|---|
| Demographic characteristics | |||
| Age (year) (valid total†) | 36.4 ± 8.2 (285) | 31.3 ± 7.6 (106) | 32.8 ± 9.8 (79) |
| Han ethnicity (%) (valid total†) | 76.8 (285) | 51.8 (112) | — |
| Married (%) (valid total†) | 54.7 (285) | 18.8 (112) | — |
| History of drug use | |||
| Median months of drug abuse (valid total†) | 7.7 (280) | 12.0 (71) | — |
| Regular median dosage (g/each time) (valid total†) | 0.4 (277) | 0.2 (72) | — |
| Chasing the dragon versus injection (%) (valid total†) | 63.5 (181) versus 27.7 (79) | 51.8 (58) versus 0 | — |
†Total number may not be equal to the number of cases due to excluding missing data.
‡Data of healthy group were collected only for age of cases.
*Methamphetamine.