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. 2008 Jan 23;2008(1):CD004057. doi: 10.1002/14651858.CD004057.pub3

Karjalainen 2004.

Methods RCT
Participants N=164; Mean age (yrs): 43.6; Gender (female): 58%; Diagnosis: workers with subacute LBP (69% had sciatica) which had made working difficult for > 4 wk and < 3 mo. 
 Setting: Occupational
Interventions (E) Mini‐intervention group: one assessment with physician and physiotherapist plus 1‐1/2 hours instruction by physiotherapist and a pamphlet with biopsychosocial information (N=56). 
 (C1) Work‐site visit group: one assessment with physician and physiotherapist plus a work visit and the same pamphlet (N=51) 
 (C2) The same pamphlet and usual care (N=57)
Outcomes Pain: 
 Intensity of pain (0 to 10) at baseline, 24 mo: (E) 6.2 (2‐10), 3.5 (0‐9); (C1) 5.4 (1‐10), 3.2 (0‐9); (C2) 5.7 (1‐10), 3.4 (0‐9) 
 % Patients with daily symptoms at 24 mo: (E) 15%; (C1) 16%; (C2) 17%
Back pain specific functional status: 
 Oswestry disability index at baseline, 24 mo: (E) 36 (4‐69), 19 (0‐60); (C1) 33 (7‐71), 18 (0‐60); (C2) 34 (13‐67), 18 (0‐58)
Return to work: 
 Days on sick‐leave at 24 mo: (E) 30 (0‐615); (C1) 45 (0‐610); (C2) 62 (0‐630);
Generic functional status: 
 Health related quality of life (15D; 0 to 1) at baseline and 24 mo: (E) 0.85( 0.61 to 1.00), 0.90 (0.7 to 1.0); (C1) 0.86 (0.70 to 0.99), 0.89 (0.49 to 1.0); (C2) 0.86 (0.70 to 0.98), 0.89 (0.6 to 1.0)
Notes  
Risk of bias
Bias Authors' judgement Support for judgement
Adequate sequence generation? Low risk  
Allocation concealment? Low risk A ‐ Adequate
Blinding? 
 All outcomes ‐ patients? High risk  
Blinding? 
 All outcomes ‐ providers? High risk  
Blinding? 
 All outcomes ‐ outcome assessors? High risk  
Incomplete outcome data addressed? 
 All outcomes ‐ drop‐outs during intervention? Low risk  
Incomplete outcome data addressed? 
 All outcomes ‐ drop‐outs during follow‐up? Low risk  
Incomplete outcome data addressed? 
 All outcomes ‐ ITT analysis? Low risk  
Similarity at baseline characteristics? Low risk  
Co‐interventions avoided or similar? Low risk  
Compliance acceptable? Low risk  
  NODES
Note 1