Table 2 Diagnostic criteria and descriptive characteristics of the Chinese mYFAS 2.0 scale items
Items | Met Criteria | Did Not Meet Criteria | Mean | SD | Correlation with the Scale | Alpha when item dropped |
|---|---|---|---|---|---|---|
Substance taken in larger amount and for longer period than intended | 193 (17.6%) | 906 (82.4%) | 0.18 | 0.38 | 0.62 | 0.83 |
Persistent desire or repeated unsuccessful attempts to quit | 96 (8.7%) | 1003 (91.3%) | 0.09 | 0.28 | 0.53 | 0.83 |
Much time/activity to obtain, use, recover | 214 (19.5%) | 885 (80.5%) | 0.19 | 0.40 | 0.54 | 0.84 |
Important social, occupational or recreational activities given up or reduced | 167 (15.2%) | 932 (84.8%) | 0.15 | 0.36 | 0.67 | 0.82 |
Use continues despite knowledge of adverse consequences | 105 (9.6%) | 994 (90.4%) | 0.10 | 0.29 | 0.64 | 0.82 |
Tolerance | 75 (6.8%) | 1024 (93.2%) | 0.07 | 0.25 | 0.48 | 0.84 |
Characteristic withdrawal symptoms: substance taken to relieve withdrawal | 265 (24.1%) | 834 (75.9%) | 0.24 | 0.43 | 0.63 | 0.83 |
Continued use despite social or interpersonal problems | 240 (21.8%) | 859 (78.2%) | 0.22 | 0.41 | 0.68 | 0.82 |
Failure to fulfil major role obligations | 121 (11.0%) | 978 (89.0%) | 0.11 | 0.31 | 0.69 | 0.82 |
Use in physically hazardous situations | 146 (13.3%) | 953 (86.7%) | 0.13 | 0.34 | 0.69 | 0.82 |
Craving, or a strong desire or urge to use | 154 (14.0%) | 945 (86.0%) | 0.14 | 0.35 | 0.69 | 0.82 |