Table 2.
Comparisons between schizophrenia patients with and without depression.
| With depression | Without depression | t | P | |
|---|---|---|---|---|
| n = 80 | n = 110 | |||
| Age (year) | 35.42 ± 9.59 | 33.56 ± 9.88 | 1.298 | 0.196 |
| Education (year) | 12.66 ± 3.18 | 12.51 ± 3.59 | 0.296 | 0.768 |
| BMI (kg/m2) | 23.86 ± 3.75 | 23.88 ± 3.95 | −0.029 | 0.977 |
| Age of onset (year) | 23.64 ± 6.88 | 23.64 ± 7.19 | 0.004 | 0.997 |
| Illness course (month) | 139.76 ± 101.54 | 123.67 ± 93.30 | 1.131 | 0.259 |
| PANSS | 71.29 ± 10.61 | 54.20 ± 10.06 | 4.554 | <0.001 |
| PANSS-P | 16.15 ± 5.65 | 12.81 ± 4.46 | 7.744 | <0.001 |
| PANSS-N | 19.44 ± 5.11 | 13.55 ± 5.25 | 9.015 | <0.001 |
| PANSS-G | 35.36 ± 6.06 | 27.88 ± 5.33 | 1.298 | <0.001 |
| RBANS | 343.44 ± 63.18 | 379.31 ± 67.20 | −3.724 | <0.001 |
| Immediate memory | 58.86 ± 15.52 | 68.00 ± 17.70 | −3.701 | <0.001 |
| Visuospatial | 69.71 ± 11.99 | 77.09 ± 17.18 | −3.302 | 0.001 |
| Language | 69.63 ± 18.08 | 76.02 ± 16.29 | −2.548 | 0.012 |
| Attention | 85.64 ± 18.24 | 91.12 ± 16.53 | −2.161 | 0.032 |
| Delayed memory | 59.74 ± 18.15 | 67.07 ± 20.34 | −2.615 | 0.011 |
BMI, Body mass index; PANSS, the positive and negative symptom scale; RBANS, the Repeatable Battery for the Assessment of Neuropsychological Status.