Table 2 Partial (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

Control variables   Work-related stress Negative affect
NAS, chronotype, start of work, work hours, age Sleep duration 0.11* (0.14**) 0.16** (0.16**)
Sleep duration, chronotype, start of work, work hours, age NAS 0.12* (0.21**) 0.15 (0.20**)
Sleep duration, NAS, start of work, work hours, age Chronotype −0.10* (−0.21**) 0.02 (−0.09*)
  1. N = 438, NAS need for additional sleep time in the morning
  2. **p ≤0.01, *p ≤0.05, bivariate correlations in parentheses