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. 2016 Apr 26;17(5):623. doi: 10.3390/ijms17050623

Table 1.

Demographic characteristics, Epworth Sleepiness Scale scores, and Chronotype (MEQ score) of shift-working (SW) and daytime (DT) nurses.

Parameters SW Nurses (n = 23) DT Nurses (n = 25) p-Value
Age (years) mean ± SD 38.8 ± 3.9 39.2 ± 3.2 0.699
Job seniority (years) mean ± SD 13.6 ± 3.4 12.8 ± 4.4 0.487
Shift-work seniority (years) mean ± SD 13.6 ± 3.4 - -
Night-shift work (nights per month) mean ± SD 6.0 ± 1.0 - -
Body Mass Index (kg/m2) mean ± SD 24.2 ± 4.7 25.0 ± 4.3 0.541
Smokers (%) 39.1 44.0 0.732
Alcohol drinkers (%) 34.8 40.0 0.709
Epworth Sleepiness Scale (score) mean ± SD 6.0 ± 3.7 5.9 ± 3.1 0.919
Chronotype a (MEQ score) mean ± SD 54.3 ± 7.8 57.2 ± 9.6 0.259

a An higher score is indicative of morningness preference.