Table 5.
Prevalence and prevalence ratios of a circadian rhythm sleep–wake disorder in day, early, evening, night and rotating shift subsamples differentiated by sex, age, education and living companion (s).
| Day shift | Early shift | Evening shift | Night shift | Rotating shift | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| % | PR (95% CI) | % | PR (95% CI) | % | PR (95% CI) | % | PR (95% CI) | % | PR (95% CI) | |
| Sex | ||||||||||
| Male | 7.0 | 1 | 9.7 | 1 | 23.0 | 1 | 22.2 | 1 | 19.8 | 1 |
| Female | 8.4 | 1.20 (1.12–1.28)** | 12.3 | 1.27 (0.66–1.88) | 18.3 | 0.80 (0.36–1.24) | 26.0 | 1.17 (0.45–1.89) | 19.1 | 0.96 (0.81–1.12) |
| Age | ||||||||||
| < 30 years | 12.0 | 1 | 18.3 | 1 | 30.2 | 1 | 30.4 | 1 | 25.3 | 1 |
| 30–50 years | 6.5 | 0.54 (0.45–0.64)** | 5.2 | 0.28 (−0.54–1.11) | 18.8 | 0.62 (0.13–1.11) | 19.1 | 0.63 (−0.41–1.66) | 16.3 | 0.64 (0.47–0.82)** |
| > 50 years | 6.7 | 0.56 (0.45–0.67)** | 12.5 | 0.68 (0.00–1.37) | 11.7 | 0.39 (−0.23–1.00)** | 29.7 | 0.98 (−0.04–2.00) | 16.7 | 0.66 (0.46–0.86)** |
| Education | ||||||||||
| Academic | 6.8 | 1 | 8.6 | 1 | 16.8 | 1 | 27.3 | 1 | 16.9 | 1 |
| Vocational | 7.6 | 1.12 (1.02–1.22)** | 4.3 | 0.50 (−0.68–1.68) | 21.3 | 1.27 (0.68–1.86) | 23.7 | 0.87 (0.02–1.72) | 20.1 | 1.19 (0.99–1.39)** |
| Secondary | 12.2 | 1.79 (1.69–1.90)** | 15.1 | 1.76 (1.03–2.48) | 26.7 | 1.59 (1.08–2.10) | 22.6 | 0.83 (−0.06–1.72) | 22.4 | 1.33 (1.14–1.51)** |
| Elementary | 15.2 | 2.24 (1.68–2.79)** | 20.0 | 1.18 (0.20–2.17) | ||||||
| Living companion(s) | ||||||||||
| Alone | 11.3 | 1 | 7.2 | 1 | 29.2 | 1 | 30.8 | 1 | 26.1 | 1 |
| With partner | 7.6 | 0.67 (0.55–0.80)** | 8.4 | 1.17 (0.05–2.29) | 18.2 | 0.62 (−0.01–2.25)* | 20.4 | 0.66 (−0.42–1.75) | 18.3 | 0.70 (0.46–0.94)** |
| Alone with kid(s)$ | 7.3 | 0.65 (0.44–0.85)** | 8.7 | 1.21 (−0.51–2.92) | 18.6 | 0.64 (−0.43–1.71) | 13.3 | 0.51 (0.04–0.98)** | ||
| With partner and kid(s) | 5.1 | 0.45 (0.33–0.58)** | 6.9 | 0.96 (−0.16–2.07) | 9.9 | 0.34 (−0.36–1.04)** | 23.3 | 0.76 (−0.24–1.75) | 13.6 | 0.52 (0.28–0.77)** |
| Other(s) | 13.9 | 1.23 (1.10–1.36) | 26.9 | 3.74 (2.70–4.78)* | 30.1 | 1.03 (0.41–1.65) | 39.1 | 1.27 (0.09–2.45) | 26.3 | 1.01 (0.77–1.25) |
$
Low number of cases in the category in the early, evening and/or night shift subgroups (n < 20). *p < 0.05, **p < 0.01. PR = prevalence ratio (calculated against indicator). Binominal logistic regression results in Supplementary Table S2.3.