Pittsburgh Sleep Quality Index scores (means and differences)
| PSQI item | Global score | Actual shift work | |||
|---|---|---|---|---|---|
| Day | Rotating | Night | ANOVA | ||
| Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | F (p value) | |
| Item 1: Subjective sleep quality | 1.35 (0.641) | 1.23 (0.624) | 1.37 (0.619) | 1.46 (0.774) | 3.61 (0.028) |
| Item 2: Sleep latency | 1.35 (0.957) | 1.26 (0.959) | 1.37 (0.949) | 1.43 (1.007) | 1.04 (0.356) |
| Item 3: Sleep duration | 0.76 (0.871) | 0.92 (0.840) | 0.66 (0.822) | 0.97 (1.114) | 6.82 (0.001) |
| Item 4: Habitual sleep efficiency | 0.9 (1.026) | 0.78 (0.968) | 0.92 (1.044) | 1.07 (1.033) | 1.68 (0.188) |
| Item 5: Sleep disturbances | 1.22 (0.471) | 1.16 (0.401) | 1.27 (0.493) | 1.3 (0.548) | 3.39 (0.034) |
| Item 6: Use of sleeping medication | 0.38 (0.827) | 0.36 (0.913) | 0.35 (0.763) | 0.6 (0.969) | 2.87 (0.058) |
| Item 7: Daytime dysfunction | 0.72 (0.726) | 0.6 (0.669) | 0.74 (0.715) | 0.86 (0.879) | 3.2 (0.041) |
| Global score (sum of items) | 6.8 (3.387) | 6.38 (3.427) | 6.78 (3.261) | 7.93 (3.804) | 4.13 (0.017) |
ANOVA F, statistic contrast associated.
PSQI, Pittsburgh Sleep Quality Index.