Table 1 Group comparison between the analysis groups concerning depressivity, gender, age, and substance use frequency
From: Verbal learning impairment in adolescents with methamphetamine use disorder: a cross-sectional study
MA | noMA | noSUD | Group differences | Total | |||
|---|---|---|---|---|---|---|---|
Test statistic (df) | p-value | Effect size | |||||
N (female) | 18 (8) | 18 (8) | 18 (8) | 54 (24) | |||
Mean age in years (SD) | 16.4 (1.2) | 16.0 (1.1) | 15.9 (1.3) | F [2, 51] = 0.968 | .387 | d = 0.41 | 16.1 (1.2) |
Mean BDI-II score (SD) | 19.1 (11.5) | 16.3 (14.4) | 11.0 (12.2) | F [2, 48] = 0.968 | .199 | d = 0.63 | 15.7 (12.9) |
Average monthly frequency of substance use (in days per month): | |||||||
Tobacco (SD, n) | 27.5 (7.7, n = 17) | 25.0 (10.4, n = 16) | 0.75 (2.8, n = 3) | F [1, 34] = 0.668 | .419 | d = 0.27 | 17.75 (14.3, n = 36) |
Alcohol (SD, n) | 4.7 (7.9, n = 14) | 7 (10.1, n = 13) | 0 | F [1, 34] = 0.563 | .458 | d = 0.25 | 3.9 (7.8, n = 27) |
Cannabis (SD, n) | 19.9 (12.5, n = 18) | 17.0 (12.2, n = 17) | 0 | F [1, 34] = 0.501 | .484 | d = 0.24 | 12.3 (13.3, n = 35) |
Amphetamine (SD, n) | 0.7 (1.4, n = 5) | 0.3 (1.0, n = 3) | 0 | F [1, 34] = 0.839 | .366 | d = 0.31 | 0.3 (1.0, n = 8) |
MDMA (SD, n) | 3.4 (4.2, n = 14) | 3.0 (7.6, n = 7) | 0 | F [1, 34] = 0.037 | .848 | d = 0.06 | 2.2 (5.2, n = 21) |
MA (SD, n) | 12.7 (13.0, n = 18) | 0 | 0 | 4.2 (9.5, n = 18) | |||