Table 3.
Partial correlations between work-related strains, fatigue and depression (N = 7.673) in the German population-based Gutenberg Health Study (GHS)
| Fatigue (PBS) a | Depression (PHQ-9) a | PBS partial PHQ-9 | PHQ-9 partial PBS | Steiger’s Z-Test | |
|---|---|---|---|---|---|
| Work overload | 0.42 < .0001 | 0.30 < .0001 | 0.32 < .0001 | 0.04 0.0005 | Z = 13.97; p < 0.001 |
| Frequent overtime hours | 0.26 < .0001 | 0.16 < .0001 | 0.21 < .0001 | −0.01 0.3397 | Z = 10.65; p < 0.001 |
| Shift work | 0.09 < .0001 | 0.08 < .0001 | 0.05 < .0001 | 0.03 0.0143 | Z = 1.30; p = 0.193 |
| Piece-rate work | 0.08 < .0001 | 0.08 < .0001 | 0.04 0.0002 | 0.03 0.0051 | Z = 0.51; p = 0.610 |
| Too little vacation or leisure time | 0.33 < .0001 | 0.26 < .0001 | 0.21 < .0001 | 0.08 < .0001 | Z = 6.83; p < 0.001 |
| Frequent conflicts with boss | 0.25 < .0001 | 0.25 < .0001 | 0.11 < .0001 | 0.13 < .0001 | Z = −0.58; p = 0.562 |
| Frequent conflicts with colleagues | 0.22 < .0001 | 0.21 < .0001 | 0.11 < .0001 | 0.10 < .0001 | Z = 0.43; p = 0.668 |
| Partner unemployed | 0.04 < .0001 | 0.06 < .0001 | 0.01 0.3654 | 0.04 0.0010 | Z = −1.32; p = 0.185 |
a Pearson Partial Correlation Coefficients, Prob > |r| under H0: Partial Rho = 0 partialized with respect to age gender SES only. Columns 3–5 partialized with respect to age, gender, SES, and the indicated construct (DP, CBI and WRS respectively). PBS partial (work related stress items) 0.57; <.0001; Lee & Preacher (2013) [35]