| Variables | B | B (%)a | Robust SE | 95%CI | |
---|---|---|---|---|---|---|
Lower limit | Upper limit | |||||
Socio-demographic | Age (years) | −0.001* | 1% | 0.000 | −0.001 | 0.000 |
Gender (ref: Male) | Â | Â | Â | Â | Â | |
Female | −0.016* | 23% | 0.007 | −0.029 | −0.003 | |
Educational level (ref: Low) | Â | Â | Â | Â | Â | |
Intermediate | −0.006 | 9% | 0.011 | −0.028 | 0.016 | |
High | −0.017* | 25% | 0.008 | −0.033 | −0.001 | |
Social support (ref: No) | Â | Â | Â | Â | Â | |
Yes | 0.022* | 32% | 0.007 | 0.008 | 0.037 | |
Health Status | Back pain intensity (0–10) | 0.001 | 1% | 0.001 | −0.001 | 0.004 |
Leg pain intensity (0–10) | 0.003 | 3% | 0.002 | −0.001 | 0.007 | |
Functional status (Oswestry Disability | Â | Â | Â | Â | Â | |
Index) (range: 0–100) | 0.001* | 1% | 0.000 | 0.001 | 0.002 | |
Co-morbidities (ref: No) | Â | Â | Â | Â | Â | |
Yes | −0.037* | 54% | 0.008 | −0.053 | −0.023 | |
Catastrophizing (ref: No) | Â | Â | Â | Â | Â | |
Yes | −0.012 | 16% | 0.007 | −0.026 | 0.002 | |
Positive treatment expectations (ref: No) | Â | Â | Â | Â | Â | |
Yes | 0.015 | 20% | 0.007 | −0.002 | 0.028 | |
Constant | 0.021 | 30% | 0.018 | −0.014 | 0.056 |