From: Comorbid symptoms of depression and musculoskeletal pain and risk of long term sickness absence
 | Crude | Model 1 | Model 2 | Model 3 | ||||
---|---|---|---|---|---|---|---|---|
 | HR | 95% CI | HR | 95% CI | HR | 95% CI | HR | 95% CI |
Number of pain locations | ||||||||
 0 | ref |  | ref |  | ref |  | ref |  |
 1 | 1.52 | (1.26 to 1.82) | 1.50 | (1.24 to 1.80) | 1.44 | (1.18 to 1.77) | 1.57 | (1.26 to 1.95) |
 2 | 1.79 | (1.50 to 2.13) | 1.73 | (1.45 to 2.07) | 1.56 | (1.28 to 1.90) | 1.65 | (1.33 to 2.04) |
 3 | 2.08 | (1.72 to 2.53) | 1.94 | (1.58 to 2.37) | 1.81 | (1.45 to 2.27) | 2.00 | (1.56 to 2.57) |
Depressive symptoms | ||||||||
 low | ref |  | ref |  | ref |  | ref |  |
 medium | 1.31 | (1.33 to 1.59) | 1.17 | (0.98 to 1.40) | 1.09 | (0.89 to 1.33) | 1.52 | (0.86 to 2.70) |
 high | 1.60 | (1.30 to 1.96) | 1.36 | (1.10 to 1.70) | 1.35 | (1.06 to 1.72) | 3.07 | (1.55 to 6.08) |
Interaction terms | ||||||||
 1 pain & medium dep |  |  |  |  |  |  | 0.52 | (0.25 to 1.08) |
 1 pain & high dep |  |  |  |  |  |  | 0.50 | (0.22 to 1.16) |
 2 pain & medium dep |  |  |  |  |  |  | 0.86 | (0.45 to 1.64) |
 2 pain & high dep |  |  |  |  |  |  | 0.32 | (0.14 to 0.71) |
 3 pain & medium dep |  |  |  |  |  |  | 0.61 | (0.31 to 1.21) |
 3 pain & high dep |  |  |  |  |  |  | 0.43 | (0.19 to 0.96) |
Wald(p)/ df | dep:62.7(0.00)/2 pain:27.(0.00)/3 | 74.(0.00)/5 | Â | 70.81(0.00)/11 | Â | 81.79(0.00)/17 |