Table 2. Univariate logistic regressions–dependent variable: have to fight sleepiness to stay awake or experience of sleepiness related incidents. OR=odds ratio, CI=Confidence interval; p=sig. level. Significant values are presented in bold.
| Have to fight sleepiness |
Sleepiness related incidents (n=43) vs no sleep related incidents (n=165) |
||||||
|---|---|---|---|---|---|---|---|
| Univariate variables | OR | CI | p | OR | CI | p | |
| Gender: males vs female (ref) | 0.937 | 0.447–1.961 | 0.862 | 1.641 | 0.708–3.804 | 0.25 | |
| Age (years): 25–34 (ref) | |||||||
| 35–44 | 0.421 | 0.061–2.99 | 0.381 | 1.219 | 0.176–8.423 | 0.682 | |
| 45–54 | 0.857 | 0.215–3.461 | 0.827 | 1.492 | 0.302–7.374 | 0.841 | |
| 55–64 | 1.071 | 0.268–4.921 | 0.922 | 1.820 | 0.367–9.035 | 0.624 | |
| 65–68 | 1.429 | 0.333–6.131 | 0.631 | 2.600 | 0.495–13.668 | 0.464 | |
| Marital status: Married /Cohabit. (ref) | |||||||
| Single | 1.014 | 0.459–2.240 | 0.973 | 0.909 | 0.410–2.017 | 0.815 | |
| Single but in a relationship | 1.065 | 0.215–5.263 | 0.939 | na | na | na | |
| BMI: | 1.040 | 0.973–1.112 | 0.245 | 1.038 | 0.969–1.111 | 0.285 | |
| Exercise: no vs yes (ref) | 2.177 | 1.125–4.213 | 0.020 | 1.661 | 0.838–3.296 | 0.146 | |
| Enough sleep: no vs yes (ref) | 9.123 | 4.393–18.945 | <0.01 | 6.161 | 2.917–13.014 | <0.01 | |
| Self-reported general health (Bad) | 9.992 | 3.869–25.805 | <0.01 | 6.746 | 2.515–18.099 | <0.01 | |
| Snoring: no (ref) vs yes | 6.780 | 3.153–14.581 | <0.01 | 2.975 | 1.310–6.754 | <0.01 | |
| Stress | 1.703 | 1.438–2.018 | <0.01 | 1.339 | 1.166–1.539 | <0.01 | |
| Index: Sleepiness | 7.884 | 4.270–4.557 | <0.01 | 2.573 | 1.785–3.708 | <0.01 | |
| Sleep quality | 3.112 | 2.123–4.561 | <0.01 | 1.807 | 1.305–2.507 | <0.01 | |
| Fatigue | 3.856 | 2.595–5.728 | <0.01 | 2.292 | 1.689–3.111 | <0.01 | |
| Impaired Waking | 5.331 | 3.230–8.796 | <0.01 | 2.307 | 1.642–3.242 | <0.01 | |
| Sleep Apnea | 1.747 | 1.247–2.448 | <0.01 | 1.238 | 0.881–1.740 | 0.218 | |
| Driving bus (years) | 1.008 | 0.980–1.037 | 0.566 | 0.981 | 0.949–1.013 | 0.239 | |
| Working hours Morning | 2.532 | 0.941–6.812 | 0.066 | 1.551 | 0.639–3.766 | 0.332 | |
| Day | 0.193 | 0.875–4.279 | 0.103 | 1.428 | 0.668–3.052 | 0.358 | |
| Evening | 1.023 | 0.533–1.964 | 0.946 | 0.780 | 0.398–1.528 | 0.468 | |
| Night | 0.848 | 0.377–1.904 | 0.689 | 0.593 | 0.245–1.437 | 0.247 | |
| Split shift | 1.340 | 0.411–1.340 | 0.411 | 0.965 | 0.474–1.964 | 0.921 | |
| Variation of starting time | 2.933 | 1.395–6.166 | 0.005 | 1.589 | 0.784–3.221 | 0.199 | |
| Less than 11 hours rest between shift | 1.225 | 0.613–2.448 | 0.565 | 1.512 | 0.738–3.098 | 0.259 | |
| 10 hours a day or more | 3.423 | 1.558–7.519 | 0.002 | 2.790 | 1.254–6.208 | 0.012 | |