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. 2020 Apr 15;17(8):2708. doi: 10.3390/ijerph17082708

Table 6.

Correlations between Sleep Measures and Stress Regarding Shift Work.

Sleep Quality Measure Shift Work Stress Hours of Sleep Work Nights Hours of Sleep Off-Shift Nights Days a Week Feeling Rested
Hours of sleep work nights −00.16 **
Hours of sleep off-shift nights −0.06 ** 0.52 **
Days a week feeling rested −0.20 ** 0.39 ** 0.20 **
Quality of sleep rating −0.22 ** 0.48 ** 0.30 ** 0.65 **

Quality of sleep measured on a 5-point Likert scale ranging from 1 (lowest) to 5 (highest); shift work stress measured on a 7-point Likert scale ranging from 0 (no stress) to 6 (a lot of stress); ** p < 0.001; correlations between single-item questions.