Table 1.
Characteristics of participants included across both modalities.
| Participant group |
||||
|---|---|---|---|---|
| Variables | HC | MAA | MAP | p value |
| Number (n) | 14 | 11 | 14 | – |
| Males | 7 | 5 | 9 | 0.6 |
| Age, years | 26.3 (4.7) | 29 (4.2) | 26.1 (6) | 0.2 |
| Education, years | 11.5 (1.1) | 10.6 (2) | 10.4 (2.6) | 0.1 |
| Age of first MA-use, years | – | 18.2 (7.6) | 18.2 (6.9) | 0.9 |
| Duration of use, years | – | 8 (4.6) | 7.9 (4.7) | 0.1 |
| Time since last use, days | – | 39.6 (21.2) | 37.6 (19.7) | 0.5 |
Abbreviations: MA, methamphetamine; HC, healthy controls; MAA, methamphetamine abusers; MAP, methamphetamine abusers with psychotic symptoms; M, male participants; Data shown as mean values (standard deviation); p value for the statistical tests: Chi-Square test for gender distribution (across 3 groups), one-way ANOVA for age and education (across 3 groups) and Student two-sample t-test (unequal variance assumed) for the drug use measures (MAA vs MAP).