Table 2.
Demographic and clinical characteristics of Group 2 participants
| Schizophrenia SD (N=38) | Control Non-SD (N=26) | Statistics t/z/χ 2 | P Value | |
|---|---|---|---|---|
| Gender, M/F | 13/25 | 10/16 | 0.121 | 0.728 |
| Age (yrs) | 39.92±10.46 | 36.27±9.82 | 1.406 | 0.165 |
| Education (yrs) | 12.53±3.26 | 14.23±3.02 | -2.167 | 0.030 |
| Marital status，Single/Married | 28/10 | 6/20 | 15.877 | <0.001 |
| Smoking, Y/N | 6/32 | 4/22 | 0.002 | 0.965 |
| BMI (kg/m2) | 21.75±3.84 | 23.78±3.61 | -2.125 | 0.038 |
| PANSS | ||||
| P subscore | 25.16±4.51 | NA | NA | NA |
| N subscore | 20.55±7.10 | NA | NA | NA |
| G subscore | 42.29±6.34 | NA | NA | NA |
| Total score | 88.00±11.67 | NA | NA | NA |
| PSQI | ||||
| Subjective sleep quality | 1.66±0.88 | 0.31±0.47 | -5.462 | <0.001 |
| Sleep latency | 1.71±1.11 | 0.35±0.49 | -4.731 | <0.001 |
| Sleep duration | 1.11±1.11 | 0.46±0.65 | -2.248 | 0.025 |
| Sleep efficiency | 1.05±1.16 | 0.12±0.33 | -3.699 | <0.001 |
| Sleep disturbances | 0.92±0.49 | 0.54±0.51 | -2.846 | 0.004 |
| Sleep medication use | 1.97±1.40 | 0.04±1.20 | -5.218 | <0.001 |
| Daytime dysfunction | 1.95±1.06 | 0.62±0.70 | -4.592 | <0.001 |
| Total score | 10.29±3.25 | 2.38±1.60 | -6.772 | <0.001 |
SD Sleep disturbances, NA Not applicable, PANSS Positive and Negative Syndrome Scale, P subscore Positive symptom subscore, N subscore Negative symptom subscore, G subscore General psychopathology subscore, PSQI Pittsburgh Sleep Quality Index, BMI Body mass index