Table 3. Comparison of PSQI and CD-RISC scores between the two surveys.
| Variables | Wave 1 (n = 127) | Wave 2 (n = 127) | Z | P | ||
|---|---|---|---|---|---|---|
| M | min, max | M | min, max | |||
| GAD score | 10 | 7, 24 | 11 | 7, 21 | -3.042 | 0.002 |
| CD-RISC score | 84 | 50, 125 | 84 | 25, 122 | -0.063 | 0.950 |
| Tough | 42 | 23, 65 | 42 | 13, 65 | -0.716 | 0.474 |
| Power | 29 | 16, 40 | 28 | 8, 40 | -1.241 | 0.215 |
| Optimistic | 13 | 6, 20 | 13 | 4, 20 | -0.189 | 0.850 |
| PSQI | 5 | 0, 15 | 5 | 0, 18 | -1.374 | 0.170 |
| Sleep quality | 1 | 0, 3 | 1 | 0, 3 | -1.098 | 0.272 |
| Sleeping time | 1 | 0, 3 | 1 | 0, 1 | -2.844 | 0.025 |
| Sleeping time | 0 | 0, 3 | 0 | 0, 2 | -1.040 | 0.298 |
| Sleep efficiency | 0 | 0, 3 | 0 | 0, 3 | -1.715 | 0.086 |
| Sleep disorders | 1 | 0, 2 | 1 | 0, 3 | <0.001 | 1.000 |
| Hypnotic drugs | 0 | 0, 3 | 0 | 0, 3 | -1.310 | 0.190 |
| Daytime dysfunction | 1 | 0, 3 | 1 | 0, 3 | -0.825 | 0.409 |
Abbreviation: M, Median; min, Minimum; max, Maximum.