Table 2 Bivariate and multivariate logistic regression analysis of poor sleep in emergency nurses
Factor | Bivariate logistic analysis | Multivariate logistic analysis | ||
|---|---|---|---|---|
P | Crude OR (95% C.I.) | P | Adjusted OR (95% C.I.) | |
Hospital level | ||||
 Primary hospital | Reference | Reference | ||
 Secondary hospital | 0.001 | 1.297 (1.117–1.506) | 0.008 | 1.309 (1.128–1.519) |
 Tertiary hospital | < 0.001 | 1.834 (1.413–2.380) | < 0.001 | 1.852 (1.427–2.403) |
Sex (0 = male, 1 = female) | < 0.001 | 2.908 (2.425–3.487) | 0.039 | 2.048 (1.036–4.051) |
Exercise in leisure time | ||||
 Never/almost never | Reference | Reference | ||
 Sometimes | < 0.001 | 0.410 (0.355–0.473) | 0.041 | 0.448 (0.209–0.957) |
 Often | < 0.001 | 0.327 (0.278–0.383) | < 0.001 | 0.352 (0.169–0.735) |
Workload | ||||
 Work hours per week | ||||
   < 40 | Reference | Reference | ||
  40–45 | < 0.001 | 2.337 (2.029–2.693) | 0.042 | 1.908 (1.021–3.565) |
   > 45 | < 0.001 | 3.104 (2.623–3.672) | < 0.001 | 2.517 (1.270–4.988) |
 Number of patients in the charge of at night | ||||
  < 30 | Reference | Reference | ||
  30–60 | < 0.001 | 2.560 (2.191–2.991) | 0.012 | 2.201 (1.102–4.397) |
   > 60 | < 0.001 | 8.062 (6.721–9.670) | < 0.001 | 6.080 (3.190–11.586) |
Night shift frequency per month | ||||
 Never | Reference | Reference | ||
 1–3 | < 0.001 | 2.279 (1.839–2.824) | 0.146 | 2.018 (0.918–4.437) |
 4–6 | < 0.001 | 4.339 (3.527–5.339) | < 0.001 | 3.717 (1.807–7.647) |
  ≥ 7 | < 0.001 | 9.050 (7.162–11.438) | < 0.001 | 7.156 (3.357–15.256) |
Occupational stress | ||||
 Psychological job demand | 0.003 | 2.257 (1.086–4.688) | 0.018 | 2.168 (1.062–4.426) |
 Job control | < 0.001 | 0.425 (0.195–0.927) | < 0.001 | 0.451 (0.212–0.961) |
 Workplace social support | < 0.001 | 0.348 (0.158–0.765) | < 0.001 | 0.378 (0.180–0.794) |
 Job insecurity | 0.011 | 2.447 (1.054–5.685) | 0.022 | 2.408 (1.045–5.551) |