Table 2.
Demographics and clinical characteristics
| SZ (n = 76) | BD-I (n = 105) | BD-II (n = 68) | MP (n = 48) | Statistics | P-value | |||
|---|---|---|---|---|---|---|---|---|
| Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | |||||
| Age, years | 29.8 (9.2) | 31.6 (11.2) | 29.4 (9.2) | 29.5 (8.3) | F = 0.971, df = 3 | 0.407 | ||
| Female sex, n (%) | 27 (35.5) | 56 (53.3) | 47 (69.1) | 27 (56.3) | X2 = 16.608, df = 3 |
0.001 SZ < all, BD-II > BD-1 |
||
| Education, years | 14.3 (3.1) | 15.0 (2.9) | 16.0 (2.8) | 14.6 (3.1) | F = 1.950, df = 3 | 0.122 | ||
| Duration of illness, years | 4.1 (6.2) | 9.9 (9.8) | 13.1 (8.7) | 6.1 (7.2) | F = 15.785, df = 3 |
0.000 BD-I and BD-II > SZ, MP |
||
| PANSS—total | 56.2 (15.6) | 42.1(8.4) | 43.0 (8.2) | 53.8 (14.2) | F = 30.356, df = 3 |
0.000 SZ, MP > BD-I, BD-II |
||
| PANSS—P | 12.8 (4.8) | 9.0 (2.5) | 9.1 (2.6) | 12.1 (3.8) | F = 28.431, df = 3 |
0.000 SZ, MP > BD-I, BD-II |
||
| Depression (PANSS item G6) | 2.3 (1.2) | 2.3 (1.4) | 2.7 (1.4) | 2.4 (1.3) | F = 2.167, df = 3 | 0.092 | ||
| Anxiety (PANSS item G2) | 2.8 (1.2) | 2.7 (1.3) | 3.3 (1.4) | 2.5 (1.2) | F = 3.599, df = 3 |
0.014 BD-II > BD-I, MP |
||
| YMRS—total | 3.5 (4.2) | 2.3 (3.4) | 3.0 (4.2) | 1.7 (2.3) | F = 2.699, df = 3 | 0.046* | ||
| AUDIT total | 5.1 (4.9) | 8.1 (7.1) | 8.5 (6.4) | 5.3 (5.1) | F = 5.648, df = 3 |
0.001 SZ < BD-I, BD-II; MP < BD-II |
||
| DUDIT total | 3.1 (6.9) | 3.6 (7.1) | 2.8 (5.6) | 3.2 (7.1) | F = 0.237, df = 3 | 0.871 | ||
Statistically significant group differences are highlighted in italic
SZ schizophrenia, BD bipolar disorder, MP mixed psychosis, PANSS positive and negative syndrome scale, YMRS young mania rating scale, AUDIT the alcohol use disorders identification test, DUDIT drug use disorders identification test
*Post-hoc tests were non-significant