Table 2.
Sleep quality patterns in the overall study sample (n = 631)
| PSQI Component | Score 0 | Score 1 | Score 2 | Score 3 | n | Mean | Std. Deviation | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| N | % | N | % | N | % | N | % | ||||
| Subjective Sleep Quality a | 69 | 10.90% | 317 | 50.20% | 196 | 31.10% | 49 | 7.80% | 631 | 1.36 | 0.78 |
| Sleep Latency a, b | 136 | 21.55% | 193 | 30.60% | 178 | 28.20% | 124 | 19.65% | 631 | 1.46 | 1.04 |
| Sleep Duration c | 159 | 25.20% | 165 | 26.10% | 176 | 27.90% | 131 | 20.80% | 631 | 1.44 | 1.08 |
| Sleep Efficiency d | 246 | 39.00% | 205 | 32.50% | 112 | 17.70% | 68 | 10.80% | 631 | 1.00 | 1.00 |
| Sleep Disturbances b | 61 | 9.67% | 355 | 56.26% | 188 | 29.79% | 27 | 4.28% | 631 | 1.29 | 0.70 |
| Use of Sleeping Medication b | 526 | 83.36% | 54 | 8.56% | 25 | 3.96% | 26 | 4.12% | 631 | 0.29 | 0.73 |
| Daytime Dysfunction b | 126 | 19.97% | 244 | 38.67% | 167 | 26.47% | 94 | 14.89% | 631 | 1.36 | 0.96 |
| Global PSQI Score | – | – | – | – | – | – | – | – | – | 8.20 | 3.95 |
a0: very good; 1: fairly good; 2: fairly bad; 3: very bad
b0: not during past month; 1: less than once a week; 2: once or twice a week; 3:three or more times a week
c0:>7 h; 1: 6–7 h; 2: 5–6 h, 3: < 5 h
d0: >85%; 1: 75–84%, 2: 65–74%; 3: < 65%