Table 2.
Multivariate analysis of factors affecting sleep quality among night-shift nurses (n=711).
| Variables | Group | β | SE | Waldχ2 | P value | 95%CI | |
|---|---|---|---|---|---|---|---|
| Lower limit | Upper limit | ||||||
| General demographic factors | |||||||
| Gender | Male | -0.268 | 0.3429 | 0.611 | 0.434 | -0.940 | 0.404 |
| Female (reference) | |||||||
| Age | 18~29 | -0.808 | 0.7630 | 1.121 | 0.290 | -2.303 | 0.688 |
| 30~39 | -0.549 | 0.6688 | 0.675 | 0.411 | -1.860 | 0.761 | |
| ≥40 (reference) | |||||||
| Educational level | Junior high school and below | -0.671 | 0.2317 | 8.398 | 0.004 | -1.125 | -0.217 |
| Bachelor degree or above (reference) | |||||||
| Working life | ≤5 years | -2.170 | 0.881 | 5.970 | 0.015 | -3.911 | -0.429 |
| 6~9 years | -2.350 | 0.8674 | 7.339 | 0.007 | -4.050 | -0.650 | |
| 10~19 years | -2.195 | 0.7843 | 7.831 | 0.005 | -3.732 | -0.658 | |
| ≥20 years (reference) | |||||||
| Average monthly income | <5000 yuan | 0.491 | 0.3669 | 1.788 | 0.181 | -0.229 | 1.210 |
| 5000~10000 yuan | 0.290 | 0.3192 | 0.826 | 0.363 | -0.336 | 0.851 | |
| >10000 yuan (reference) | |||||||
| Night shift factor | |||||||
| Average duration of each night shift | ≤8 hours | -0.959 | 0.5425 | 3.127 | 0.077 | -2.022 | 0.104 |
| 9~16 hours | -1.028 | 0.5557 | 3.421 | 0.064 | -2.117 | 0.061 | |
| ≥17 hours (reference) | |||||||
| Average weekly night shift frequency | Less than or equal to once | -0.043 | 0.3452 | 0.015 | 0.902 | -0.719 | 0.634 |
| 2 times | 0.236 | 0.3136 | 0.566 | 0.452 | -0.379 | 0.851 | |
| Greater than or equal to 3 times (reference) | |||||||
| Average night shift interval days | ≤5 days | 0.820 | 0.4540 | 3.264 | 0.071 | -0.070 | 1.710 |
| 6~9 days | 0.166 | 0.4421 | 0.140 | 0.708 | -0.701 | 1.032 | |
| ≥10 days (reference) | |||||||
| Quality of make-up sleep the day before night shift | Good | -2.233 | 0.4724 | 22.342 | 0.000 | -3.159 | -1.307 |
| Generally | -0.992 | 0.3070 | 10.433 | 0.001 | -1.594 | -0.390 | |
| Poor (reference) | |||||||
| Quality of make-up sleep the day after night shift | Good | -2.283 | 0.4576 | 24.887 | 0.000 | -3.180 | -1.386 |
| Generally | -1.056 | 0.3261 | 10.495 | 0.001 | -1.695 | -0.417 | |
| Poor (reference) | |||||||
| Life rules | |||||||
| Is the daily routine regular | Very regular | -3.194 | 0.4969 | 41.309 | 0.000 | -4.167 | -2.220 |
| More regular | -1.398 | 0.3125 | 20.031 | 0.000 | -2.011 | -0.786 | |
| Less irregular | -1.116 | 0.2982 | 14.010 | 0.000 | -1.701 | -0.532 | |
| Very irregular (reference) | |||||||
| Daily diet | Very regular | -0.511 | 0.6123 | 0.696 | 0.404 | -1.711 | 0.689 |
| More regular | -1.115 | 0.4021 | 7.695 | 0.006 | -1.903 | -0.327 | |
| Less irregular | -0.343 | 0.3909 | 0.769 | 0.380 | -1.109 | 0.423 | |
| Very irregular (reference) | |||||||
SE, Standard error; 95% CI, 95% confidence interval.