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Table 3 Missing data.

From: Subacute and chronic, non-specific back and neck pain: cognitive-behavioural rehabilitation versus primary care. A randomized controlled trial

Follow-up Six months p-value 12 months p-value 18 months* All forms p-value
Rehabilitation group (n = 61)        
   Previous sick-listing (days)** 397 vs. 215 .008 371 vs. 214 .01 - -  
   Current sick-listing at baseline (days) 367 vs. 158 < .001 346 vs. 156 < .001 - 275 vs. 151 .003
   Unemployment (%) - - 60 vs. 18 .03 - -  
Primary-care group (n = 62)        
   Age (years) 35.8 vs. 44.8 .006 -   - 38.3 vs. 45.3 .01
   Single (%) 58 vs. 28 .046 -   - -  
   EQ-5D [49] - - .357 vs. .562 .046 - -  
  1. Non-responders versus responders. Significant differences at baseline. Descriptive statistics.
  2. *At 18 months there were no significant differences.
  3. ** = Net days over the 18 months preceding baseline.