|  |  | Prediction for Stable return-to-work | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 |  |  | 6 months | 12 months | 18 months | 24 months | ||||||||
 | Class limits | n | OR | p | 95%CI | OR | p | 95%CI | OR | p | 95%CI | OR | p | 95%CI |
Pain just now (VAS 1-100)[25] | 70-100 | 41 | Ref. | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
 | 48-69 | 43 | 2.4 | .09 | .9-6.9 | - | - | - | - | - | - | - | - | - |
 | 0-47 | 40 | 1.5 | NS | .5-4.3 | - | - | - | - | - | - | - | - | - |
Pain at worst last week[25] | 81-100 | 42 | Ref. | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â | Â |
 | 68-80 | 43 | 2.5 | .09 | .9-6.8 | - | - | - | - | - | - | - | - | - |
 | 0-67 | 39 | 1.4 | NS | .5-4.2 | - | - | - | - | - | - | - | - | - |
Intermittent pain[15]1 | - | 39 | - | - | - | - | - | - | 2.3 | .04 | 1.0-5.4 | - | - | - |
Non-radiating pain[17]2 | - | 32 | - | - | - | - | - | - | - | - | - | - | - | - |
Local pain[25]3 | - | 24 | - | - | - | - | - | - | - | - | - | - | - | - |
Back-pain domination[32]4 | - | 86 | 9.0 | .004 | 2.0-40.2 | 2.5 | .05 | 1.0-6.4 | - | - | - | - | - | - |
Time since start of NSP (years)[27] | > 5 | 53 | Â | Â | Â | Â | Â | Â | Ref. | Â | Â | Ref. | Â | Â |
 | 1.5-5 | 34 | - | - | - | - | - | - | 2.9 | .03 | 1.1-7.4 | 2.2 | .09 | .9-5.5 |
 | < 1.5 | 37 | - | - | - | - | - | - | 1.5 | NS | .6-3.6 | 1.1 | NS | .5-2.7 |
No surgery f. b/n pain[50]5 | - | 116 | - | - | - | - | - | - | - | - | - | - | - | - |
No anxiety/depression[15]6 | - | 26 | - | - | - | - | - | - | - | - | - | - | - | - |
Tired seldom[67]7 | - | 59 | 3.1 | .01 | 1.3-7.6 | - | - | - | 1.9 | .09 | .9-4.2 | - | - | - |
No comorbidity[68]8 | - | 79 | - | - | - | - | - | - | - | - | - | - | - | - |
Non-severe functional impairment (ODI)9 | - | 78 | 2.1 | .09 | .9-4.9 | 2.9 | .01 | 1.3-6.8 | 2.5 | .02 | 1.2-5.4 | - | - | - |
Health-related | 0-.359 | 42 | Ref. | Â | Â | Ref. | Â | Â | Ref. | Â | Â | Â | Â | Â |
quality of life | .360-.629 | 46 | 2.8 | .06 | 1.0-8.3 | 2.1 | NS | .8-5.4 | 2.1 | NS | .8-5.1 | - | - | - |
(EQ-5D)[21] | .630-1.0 | 36 | 2.9 | .06 | .9-8.9 | 2.6 | .06 | 1.0-7.1 | 3.0 | .03 | 1.1-7.9 | - | - | - |
State of health (EQ-VAS)[21] | 0-35 | 44 | Ref. | Â | Â | . | Â | Â | Ref. | Â | Â | Â | Â | Â |
 | 36-49 | 33 | 2.2 | NS | .7-7.0 | - | - | - | 2.0 | NS | .7-5.4 | - | - | - |
 | 50-100 | 47 | 3.6 | .02 | 1.3-10.3 | - | - | - | 3.1 | .01 | 1.3-7.7 | - | - | - |
Non-catastrophizing[70]10 | - | 67 | 2.2 | .08 | .9-5.1 | - | - | - | 3.6 | .002 | 1.6-8.0 | 2.3 | .04 | 1.1-4.9 |
High self prediction[14] | - | 95 | 4.2 | .03 | 1.2-15.2 | 6.4 | .002 | 1.9-21.0 | 4.4 | .005 | 1.5-12.4 | 3.8 | .008 | 1.4-10.2 |