Table 2.
Binary logistic stepwise regression
| Variables | Model 1 OR (95% CI) |
Model 2 OR (95% CI) |
Model 3 OR (95% CI) |
|---|---|---|---|
| Sleep quality | |||
| Good | 1 | 1 | 1 |
| Moderate | 2.610 (2.132–3.195)*** | 2.340 (1.904–2.876)*** | 2.066 (1.661–2.568)*** |
| Poor | 29.076 (20.852–40.543)*** | 24.786 (17.638–34.830)*** | 19.584 (13.770-27.854)*** |
| Severe | 21.822 (11.463–41.544) *** | 17.648 (9.138–34.082)*** | 14.285 (7.296–27.966)*** |
| Perceived stress | |||
| Normal | 1 | 1 | |
| Poor | 2.109 (1.756–2.532) *** | 2.061 (1.703–2.494)*** | |
| Severe | 0.835 (0.319–2.185) | 0.571 (0.215–1.514) | |
| Age | |||
| ≤ 25 | 1 | ||
| 26–30 | 1.126 (0.722–1.754) | ||
| 31–35 | 1.341 (0.793–2.267) | ||
| 36–40 | 1.440 (0.746–2.778) | ||
| 41–45 | 0.943 (0.378–2.353) | ||
| > 45 | 1.023 (0.394–2.655) | ||
| Education | |||
| Diploma | 1 | ||
| Bachelor | 0.811 (0.589–1.117) | ||
| Master | 0.493 (0.280–0.868)* | ||
| Doctorate | 0.714 (0.096–5.312) | ||
| Working experience | |||
| ≤ 5 | 1 | ||
| 6–10 | 0.649 (0.427–0.985)* | ||
| 11–15 | 0.942 (0.564–1.572) | ||
| 16–20 | 0.901 (0.458–1.770) | ||
| > 20 | 0.673 (0.279–1.626) | ||
| Position | |||
| Nurse | 1 | ||
| Primary nurse | 1.076 (0.485–2.390) | ||
| Senior nurse | 1.116 (0.488–2.548) | ||
| Vice professor | 1.482 (0.581–3.782) | ||
| Shift work | |||
| None | 1 | ||
| Yes | 1.926 (1.474–2.517)*** | ||
| Work satisfaction | |||
| Very satisfied | 1 | ||
| Satisfied | 1.226 (0.763–1.970) | ||
| Neutral | 2.330 (1.437–3.777)*** | ||
| Dissatisfied | 2.659 (1.553–4.553)*** | ||
| Very dissatisfied | 2.517 (1.022–6.198)* | ||
| Physical activity | |||
| None | 1 | ||
| Yes | 0.720 (0.594–0.872)*** | ||
| Model diagnosis and fit | |||
| Nagelkerke R2 | 0.298 | 0.323 | 0.378 |
| p-value | 1.000 | 0.011 | 0.966 |
Note
Model 1: adjusted for sleep quality; Model 2: adjusted for sleep quality and perceived stress; Model 3: adjusted for sleep quality, perceived stress, age, education, working experience, position, shift work, work satisfaction, and physical activity. CI = Confidence Interval; OR = Odds Ratio; ***p < 0.001, **p < 0.01, *p < 0.05