Wage replacement duration 3–12 months vs | Wage replacement duration 12–18 months vs | ||||||||||||||||
1 day to 3 months | 1 day to 3 months | ||||||||||||||||
Model 1 | Model 2 | Model 1 | Model 2 | ||||||||||||||
OR | 95% CI | P value | OR | 95% CI | P value | OR | 95% CI | P value | OR | 95% CI | P value | ||||||
Model intercept | 0.70 | 0.44 | 1.12 | 0.14 | 0.76 | 0.47 | 1.21 | 0.25 | 0.24 | 0.14 | 0.41 | <0.01 | 0.25 | 0.15 | 0.44 | <0.01 | |
Pain group | Mild pain, functional impairment unlikely | 1.29 | 0.90 | 1.85 | 0.17 | 1.30 | 0.90 | 1.87 | 0.16 | 2.93 | 1.90 | 4.52 | <0.01 | 3.09 | 1.99 | 4.81 | <0.01 |
Ref: no pain group | Severe pain, functional impairment likely | 2.00 | 1.33 | 3.02 | <0.01 | 2.04 | 1.34 | 3.10 | <0.01 | 8.46 | 5.35 | 13.38 | <0.01 | 9.35 | 5.85 | 14.94 | <0.01 |
Claimant age | <30 years old | 0.63 | 0.37 | 1.09 | 0.10 | 0.63 | 0.36 | 1.09 | 0.10 | 0.79 | 0.45 | 1.41 | 0.43 | 0.79 | 0.44 | 1.42 | 0.43 |
Ref: 30–39 years old | 40–49 years old | 0.95 | 0.58 | 1.55 | 0.85 | 0.95 | 0.58 | 1.55 | 0.83 | 1.10 | 0.66 | 1.84 | 0.72 | 1.13 | 0.67 | 1.91 | 0.65 |
50–59 years old | 1.20 | 0.77 | 1.88 | 0.41 | 1.23 | 0.78 | 1.93 | 0.37 | 1.33 | 0.83 | 2.14 | 0.23 | 1.35 | 0.83 | 2.19 | 0.23 | |
Over 60 years old | 1.20 | 0.71 | 2.01 | 0.49 | 1.14 | 0.67 | 1.94 | 0.62 | 1.77 | 1.04 | 3.01 | 0.03 | 1.75 | 1.02 | 3.01 | 0.04 | |
Sex | Female | 0.84 | 0.62 | 1.14 | 0.26 | 0.83 | 0.61 | 1.13 | 0.23 | 0.82 | 0.60 | 1.12 | 0.20 | 0.85 | 0.62 | 1.17 | 0.32 |
Ref: male and other not specified | |||||||||||||||||
Nature of injury | Fracture | 2.72 | 1.61 | 4.61 | <0.01 | 2.74 | 1.61 | 4.65 | <0.01 | 2.96 | 1.72 | 5.10 | <0.01 | 2.98 | 1.72 | 5.16 | <0.01 |
Ref: sprain/strain/dislocation | Superficial or open wound | 0.50 | 0.30 | 0.84 | 0.01 | 0.50 | 0.30 | 0.83 | 0.01 | 0.70 | 0.43 | 1.13 | 0.15 | 0.71 | 0.44 | 1.16 | 0.17 |
Organ/blood vessel/muscle injury, internal injury, crushing, amputation | 1.33 | 0.83 | 2.15 | 0.24 | 1.36 | 0.84 | 2.20 | 0.21 | 1.56 | 0.96 | 2.53 | 0.07 | 1.57 | 0.97 | 2.56 | 0.07 | |
Other | 3.64 | 1.70 | 7.79 | <0.01 | 3.71 | 1.73 | 7.95 | <0.01 | 0.52 | 0.15 | 1.74 | 0.29 | 0.53 | 0.16 | 1.78 | 0.30 | |
Unknown | 1.47 | 0.87 | 2.47 | 0.15 | 1.46 | 0.85 | 2.50 | 0.17 | 2.29 | 1.37 | 3.80 | <0.01 | 2.30 | 1.36 | 3.90 | <0.01 | |
Prior chronic condition | Back problems prior to the work injury | -- | -- | -- | -- | 0.86 | 0.57 | 1.30 | 0.47 | -- | -- | -- | -- | 0.65 | 0.42 | 1.00 | 0.05 |
Ref: no prior condition | Arthritis prior to the work injury | -- | -- | -- | -- | 0.95 | 0.62 | 1.47 | 0.82 | -- | -- | -- | -- | 1.04 | 0.68 | 1.61 | 0.84 |
Mood disorder prior to the work injury | -- | -- | -- | -- | 0.64 | 0.40 | 1.03 | 0.07 | -- | -- | -- | -- | 0.45 | 0.27 | 0.76 | <0.01 |
Model 1 independent variables: pain group, claimant age, sex and nature of injury. Model 2 independent variables: Model 1+ presence of back problems prior to the work injury, presence of arthritis prior to the work injury and presence of a mood disorder prior to the work injury. Bold values indicate OR statistically significant at the α=0.05 level.