Table 4.
Group differences in cognitive functioning on K-WAIS-IV
| Variables | NSSI+SA (N=27) | NSSI (N=14) | SA (N=39) | Total (N=80) | F or χ2 | p |
|---|---|---|---|---|---|---|
| FSIQ | 93.85 (14.75) | 93.57 (15.22) | 93.72 (14.93) | 93.74 (14.73) | 0.002 | 0.998 |
| VCI | 96.67 (12.89) | 100.36 (14) | 97.62 (13.19) | 97.78 (13.13) | 0.364 | 0.696 |
| SI | 9.44 (3.42) | 10.29 (3.19) | 9.74 (2.57) | 9.74 (2.96) | 0.365 | 0.696 |
| VC | 9.00 (3.28) | 10.00 (3.21) | 9.05 (2.94) | 9.20 (3.09) | 0.564 | 0.571 |
| IN | 9.11 (2.29) | 9.57 (2.1) | 9.64 (2.65) | 9.45 (2.42) | 0.409 | 0.792 |
| PRI | 98.89 (14.55) | 96.57 (16.25) | 101.82 (17.55) | 99.91 (16.92) | 0.609 | 0.547 |
| BD | 9.44 (2.94) | 9.07 (3.33) | 9.87 (3.56) | 9.59 (3.29) | 0.336 | 0.716 |
| MR | 9.04 (2.71) | 9.64 (2.95) | 10.05 (3.44) | 9.64 (3.12) | 0.838 | 0.436 |
| VP | 10.52 (2.79) | 9.29 (2.7) | 10.59 (2.9) | 10.34 (2.84) | 1.173 | 0.315 |
| WMI | 97.52 (16.75) | 95.14 (14.83) | 94.77 (14.36) | 95.76 (15.14) | 0.272 | 0.763 |
| DS | 10.33 (3.49) | 9.29 (2.92) | 9.08 (2.57) | 9.54 (2.99) | 1.483 | 0.233 |
| AR | 8.52 (3.08) | 8.79 (3.76) | 8.82 (3.32) | 8.71 (3.28) | 0.430 | 0.806 |
| PSI | 90.63 (17.3) | 87.5 (15.24) | 86.67 (19.98) | 88.15 (18.22) | 0.467 | 0.792 |
| SS | 8.81 (4.14) | 7.79 (2.88) | 7.21 (3.96) | 7.85 (3.88) | 1.385 | 0.256 |
| CD | 7.15 (2.9) | 7.36 (3.29) | 7.36 (3.71) | 7.29 (3.35) | 0.034 | 0.966 |
WAIS-IV: Wechsler Adult Intelligence Scale–Fourth Edition, NSSI: non-suicidal self-injury, SA: suicide attempt, FSIQ: full-scale intelligence quotient, VCI: verbal comprehension index, PRI: perceptual reasoning index, WMI: working memory index, PSI: processing speed index, VC: vocabulary, SI: similarities, IN: information, CO: comprehension, BD: block design, MR: matrix reasoning, VP: visual puzzles, AR: arithmetic, DS: digit span, SS: symbol span, CD: coding