Fig 1.
Exclusion criteria of the study and sample composition.
Ext. E type = extreme evening type; Ext. M type = extreme morning type; BMI = body mass index; G1-NC = group 1, workers without children; G2-PS = group 2, workers with preschool age children; G3-S = workers with school-age children.
Table 1.
General characteristics of the sample and sleepiness scale scores.
Table 2.
Parameters of sleep and wakefulness.
Fig 2.
Sleep time (ST) and sleep latency (SL).
Mean and standard deviation 95% adjusted for age only on the last day of work. a) ST (covariant age p = 0.431); b) SL (covariant age p = 0.013*). ANCOVA one-way with Sidak multiple comparisons. F = ANOVA; PES = Partial Eta Squared with effect size; Power = observed power. * = p<0.05.
Table 3.
The SF-36 quality of life domains.
Fig 3.
Means and standard deviations of the risk index for fatigue (RIF).
(M1) = time of work onset and (M2) time of work completion. First night shift: a = p<0.05 in comparison with G1-NC at M1; b = p<0.05 in comparison with G2-PS at M1; c = p<0.05 in comparison with G3-S at M1 and d = p<0.05 in comparison with G1-NC at M2. Last night shift: a = p<0.05 in comparison with G1-NC at M1; b = p<0.05 in comparison with G2-PS at M1; c = p<0.05 in comparison with G3-S at M1. ANOVA for repeated measures with Bonferroni test.