Table 3 Contribution of the Demand-Control-Support and the Effort-Reward Imbalance models to income inequalities in psychological distress among men
| Â | Model I | Model II | Model III | Model IV | Model V | Model VI |
|---|---|---|---|---|---|---|
|  | Age-adjusted | Model I + Psychological demand | Model I + Job control | Model I + Social support | Model I + Reward | Model I + Job control, reward and social support |
Contributiona % (95% CI) | REF | −24 (−40;−6) | 9 (−3; 20) | 14 (−3; 24) | 24 (9; 38) | 23 (5; 40) |
Mean differences (95% CI) | ||||||
 Household income ($/year) | ||||||
 ≥100 000 | REF | REF | REF | REF | REF | REF |
 60 000–99 999 | 0.32 (−0.10; 0.74) | 0.61 (0.21; 1.01)** | 0.28 (−0.13; 0.70) | 0.25 (−0.16; 0.67) | 0.19 (−0.22; 0.61) | 0.22 (−0.20; 0.63) |
 40 000–59 999 | 0.62 (0.16; 1.07)** | 0.93 (0.49; 1.37)** | 0.56 (0.10; 1.03)* | 0.55 (0.10; 1.01)* | 0.32 (−0.13; 0.78) | 0.39 (−0.07; 0.85) |
 0–39 999 | 1.26 (0.79; 1.73)*** | 1.56 (1.11; 2.02)*** | 1.15 (0.66; 1.63)*** | 1.09 (0.62; 1.55)*** | 0.95 (0.48; 1.42)*** | 0.96 (0.48; 1.45)*** |
 Psychological demand (tertiles) | ||||||
 0–7.2 |  | REF |  |  |  |  |
 7.3–10 |  | 0.92 (0.59; 1.26)*** |  |  |  |  |
 >10 |  | 2.44 (2.05; 2.83)*** |  |  |  |  |
 Job control (tertiles) | ||||||
 ≥25 |  |  | REF |  |  | REF |
 21–24.9 |  |  | −0.04 (−0.41; 0.32) |  |  | −0.20 (−0.57; 0.18) |
 0–20.9 |  |  | 0.46 (0.06; 0.85)* |  |  | 0.00 (−0.42; 0.42) |
 Social support at work | ||||||
 ≥56 |  |  |  | REF |  | REF |
 48–55 |  |  |  | −0.01 (−0.38; 0.36) |  | −0.21 (−0.61; 0.19) |
 0–47 |  |  |  | 1.28 (0.89; 1.68)*** |  | 0.65 (0.19; 1.11)** |
 Working alone |  |  |  | 0.35 (−0.48; 1.18) |  | −0.15 (−1.10; 0.79) |
 Reward (tertiles) | ||||||
 >16 |  |  |  |  | REF | REF |
 14–16 |  |  |  |  | 0.30 (−0.07; 0.66) | 0.19 (−0.20; 0.58) |
 0–13 |  |  |  |  | 1.71 (0.34; 2.08)*** | 1.37 (0.94; 1.80)*** |