Table 1 Descriptive statistics and bivariate correlations

From: Sleep and chronotype in relation to work-related stress and negative affect: The moderating role of a flexible start of workSchlaf und Chronotyp im Hinblick auf arbeitsbedingten Stress und negative Stimmung: die moderierende Wirkung eines flexiblen Arbeitsbeginns

  M SD Min Max 1 2 3 4 5 6 7 8 9
1 Chronotype 53.81 10.36 21 81 1
2 NAS 50.22 47.11 0 240 −0.41** 1
3 Sleep duration 0.55 0.77 0 3 −0.20** 0.15** 1
4 Work starting time 07:57 01:08 04:45 15:00 −0.26** −0.10* 0.03 1
5 Flexible start of work 4.32 1.93 1 7 0.19* −0.18** −0.08 0.07 1
6 Work-related stress 2.41 0.79 1 4.82 −0.21** 0.21** 0.14** 0.00 −0.03 1
7 Negative affect 1.91 0.64 1 4.40 −0.09* 0.20** 0.16** −0.07 −0.02 0.49** 1
8 Age 37.68 12.39 18 73 0.19** −0.08 0.12* −0.09 0.06 −0.11* −0.15** 1
9 Gender −0.03 −0.03 0.06 −0.02 0.02 −0.10* −0.05 0.07 1
  1. N = 438; Gender (1 = female, 2 = male), one participant reported diverse and was not included in the correlation with the gender variable; Max maximum, Min minimum, SD standard deviation, M mean, NAS need for additional sleep time in the morning
  2. **p ≤0.01, *p ≤0.05