Table 2.
Drug use characteristics and psychosis symptoms of the methamphetamine users.
| Variables | Samples (n) | Proportion (%)/Mean ± SD |
|---|---|---|
| SYNTHETIC DRUG EVER USED# | ||
| Methamphetamine | 1685 | 100 |
| Ketamine | 83 | 4.94 |
| Magu (Main component is MA) | 63 | 3.75 |
| Ecstasy | 56 | 3.34 |
| Marijuana | 35 | 2.08 |
| OTHER SUBSTANCE EVER USED# | ||
| Heroin | 237 | 14.25 |
| Tobacco | 565 | 33.97 |
| Alcohol | 312 | 18.76 |
| TWO OR MORE SYNTHETIC DRUGS EVER USED* | ||
| No | 1486 | 88.51 |
| Yes | 193 | 11.49 |
| PRIMARY ROUTE OF MA ADMINISTRATION# | ||
| Smoking/insufflation | 1586 | 95.48 |
| Intravenous | 31 | 1.87 |
| Snorting | 15 | 0.90 |
| Oral | 18 | 1.08 |
| SOURCE OF DRUG# | ||
| Illegal drug market | 1222 | 73.17 |
| Dance halls and other entertainment place | 258 | 15.45 |
| Friends / relatives | 471 | 28.20 |
| Buy online | 30 | 1.80 |
| CAUSE OF MA USE# | ||
| Craving | 864 | 57.71 |
| Influence by friends or peers | 757 | 45.30 |
| Pursuit of euphoria | 674 | 40.34 |
| Anti-fatigue, “mention spirit” | 494 | 29.56 |
| Emotions, emotional problems | 255 | 15.26 |
| To socialize | 103 | 6.16 |
| Trying to “enhance sexual function” | 67 | 4.01 |
| Trying to “lose weight” | 48 | 2.87 |
| DRUG USE SITES# | ||
| At home | 834 | 49.82 |
| Friend's house | 603 | 36.02 |
| Hotel / restaurant | 516 | 30.82 |
| Dance halls / disco | 303 | 18.10 |
| Bathing center | 96 | 5.73 |
| Age at first MA use (years)* | 1636 | 28.48 ± 8.07 |
| ≤25 | 654 | 39.98 |
| >25 | 982 | 60.02 |
| DOSE OF METHAMPHETAMINE USE | ||
| < 0.2 g per time | 879 | 52.17 |
| ≥0.2 g per time | 806 | 47.83 |
| CONCURRENT USE OF OTHER DRUGS* | ||
| No | 1589 | 95.95 |
| Yes | 67 | 4.05 |
| PREVIOUS DRUG TREATMENT* | ||
| No | 1325 | 79.96 |
| Yes | 332 | 20.04 |
| FREQUENCY OF METHAMPHETAMINE USE* | ||
| 1 time/day | 295 | 17.76 |
| 2–6 times/week | 322 | 19.39 |
| 1 time/week | 397 | 23.90 |
| 1–3 times/month | 410 | 24.68 |
| <1 times/month | 237 | 14.27 |
| DURATION OF METHAMPHETAMINE USE (MONTHS) | ||
| ≤3 | 466 | 27.66 |
| >3 | 1219 | 72.34 |
| METHAMPHETAMINE DEPENDENCE* | ||
| No | 578 | 35.20 |
| Yes | 1064 | 64.80 |
| LENGTH OF ABSTINENCE* | ||
| ≤1 month | 759 | 55.20 |
| >1 month | 616 | 44.80 |
| PSYCHOTIC SYMPTOMS** | ||
| Psychosis symptoms(PANSS ≥ 58) | 286 | 16.97 |
| Depressive symptoms (BDI ≥ 8)* | 664 | 40.54 |
| Anxiety symptoms (HAMA ≥ 14)* | 485 | 29.06 |
#
Multiple choices.
*
With missing value.
**
PANSS, The Positive and Negative Syndrome Scale; BDI, Beck Depression Inventory; HAMA, Hamilton Anxiety Scale.