Table 2

Levels of distress (mean and SD score on 4DSQ distress scale) in the samples of 'healthy working employees' and 'employees on sick leave due to psychological complaints'



Distress (range 0–32)





Percentile
Sample
n
Mean
SD
5
25
50
75
95
Healthy working employees
3605
4.0
5.0
0.0
0.0
2.0
6.0
14.0
Employees on sickness absence due to psychological complaints
280
22.3
6.7
9.0
18.0
24.0
28.0
31.0

van Rhenen et al. Journal of Occupational Medicine and Toxicology 2008 3:3   doi:10.1186/1745-6673-3-3