Table 3 General PSQI results and mean sleep time comparison by group
From: The relationship between quality of sleep and night shift rotation interval
Variables | Group A | Group B | Group C | P-valuea |
|---|---|---|---|---|
N (%)b | N (%) | N (%) | ||
Sleep quality | Â | Â | Â | <0.001 |
 Good | 264 (61.3) | 800 (52.0) | 342 (40.2) |  |
 Poor | 167 (38.7) | 737 (48.0) | 508 (59.8) |  |
Mean PSQIc Score | 5.32 ± 2.98 | 5.75 ± 2.95 | 6.63 ± 3.01 |  |
Mean sleep time(hour) | 7.06 ± 1.58 | 6.63 ± 1.24 | 5.95 ± 1.47 |  |