| Mediation analysis of working conditions | |||||||
---|---|---|---|---|---|---|---|---|
Mobility limitations | Physical impairment | |||||||
 | Total effects | Direct effects | Indirect effects | Mediation %a | Total effects | Direct effects | Indirect effects | Mediation %a |
Model 2 Physical working conditions (ref: upper white-collar) | ||||||||
 Lower white-collar | 0.30 | 0.37†| −0.07 | −23.92 | 0.51* | 0.44†| 0.08 | 14.63 |
 Skilled blue-collar | 0.55* | 0.70** | −0.15†| − 26.40 | 0.50†| 0.36 | 0.14 | 28.80 |
 Unskilled blue-collar | 0.42†| 0.55* | − 0.14†| −31.89 | 0.42†| 0.28 | 0.14 | 32.50 |
Model 3 Psychosocial working conditions | ||||||||
 3a Passive (ref: upper white-collar) | ||||||||
  Lower white-collar | 0.30 | 0.30 | 0.00 | −3.05 | 0.51* | 0.42†| 0.09 | 17.59 |
  Skilled blue-collar | 0.55* | 0.56* | −0.01 | −2.50 | 0.49†| 0.36 | 0.14†| 27.61 |
  Unskilled blue-collar | 0.41†| 0.43†| −0.02 | −4.32 | 0.42†| 0.23 | 0.19†| 45.71 |
 3b High-strain (ref: upper white-collar) | ||||||||
  Lower white-collar | 0.30 | 0.26 | 0.04 | 14.41 | 0.51* | 0.52* | −0.01 | −1.64 |
  Skilled blue-collar | 0.56* | 0.56* | −0.00 | −0.11 | 0.50†| 0.50†| 0.00 | 0.01 |
  Unskilled blue-collar | 0.41†| 0.39†| 0.02 | 5.98 | 0.42†| 0.42†| −0.00 | −0.91 |
 3c Low-strain (ref: upper white-collar) | ||||||||
  Lower white-collar | 0.29 | 0.25 | 0.04 | 15.20 | 0.51* | 0.47†| 0.04 | 8.50 |
  Skilled blue-collar | 0.55* | 0.51* | 0.04 | 6.54 | 0.50†| 0.46†| 0.04 | 7.19 |
  Unskilled blue-collar | 0.41†| 0.37 | 0.10†| 23.38 | 0.42†| 0.32 | 0.10 | 23.92 |
 3d Active (ref: upper white-collar) | ||||||||
  Lower white-collar | 0.30 | 0.32 | −0.02 | −8.13 | 0.51* | 0.52* | −0.01 | −1.61 |
  Skilled blue-collar | 0.54* | 0.57* | −0.03 | −5.15 | 0.50†| 0.51†| −0.01 | −1.97 |
  Unskilled blue-collar | 0.41†| 0.53†| −0.03 | −7.33 | 0.42†| 0.43†| −0.01 | −2.57 |
Model 4 Physical and psychosocial working conditions (ref: upper white-collar) | ||||||||
 Lower white-collar | 0.31 | 0.28 | 0.02 | 7.92 | 0.52* | 0.33 | 0.18†| 35.35 |
 Skilled blue-collar | 0.56* | 0.60* | −0.04 | −8.00 | 0.50†| 0.25 | 0.26* | 50.91 |
 Unskilled blue-collar | 0.43†| 0.42†| 0.01 | 3.00 | 0.42†| 0.11 | 0.31* | 73.69 |