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Table 2 Differences in change in pain and disability between the groups

From: The long-term effects of naprapathic manual therapy on back and neck pain - Results from a pragmatic randomized controlled trial

Baseline

26 weeks

 

52 weeks

 

Baseline value

Change*

Diff. in change†

Change*

Diff. in change†

(95% CI)

(95% CI)

(95% CI)

p-value

(95% CI)

(95% CI)

p-value

Pain (CPQ)

    

Index group

    

5.5

2.6

 

2.5

 

(5.3-5.8)

(2.3-2.9)

 

(2.2-2.9)

 

n = 204

n = 188

1.0

n = 182

0.5

  

(0.5-1.5)

 

(0.1-1.1)

  

<0.001

 

0.021

Control Group

    

5.4

1.6

 

2.0

 

(5.2-5.7)

(1.3-2.0)

 

(1.6-2.3)

 

n = 203

n = 176

 

n = 158

 

Disability (CPQ)

    

Index group

    

2.7

1.4

 

1.5

 

(2.5-3.0)

(1.0-1.7)

 

(1.2-1.8)

 

n = 206

n = 186

0.6

n = 184

0.7

  

(0.1-1.1)

 

(0.2-1.2)

  

0.020

 

0.012

Control group

    

2.8

0.8

 

0.8

 

(2.3-3.1)

(0.4-1.2)

 

(0.4-1.2)

 

n = 202

n = 176

 

n = 157

 

Disability (WDQ)

    

Index group

    

3.0

1.3

 

1.4

 

(2.8-3.2)

(1.1-1.6)

 

(1.2-1.7)

 

n = 206

n = 189

0.5

n = 186

0.6

  

(0.2-0.9)

 

(0.2-1.0)

  

0.002

 

0.001

Control group

    

3.0

0.8

 

0.8

 

(2.8-3.3)

(0.6-1.1)

 

(0.5-1.1)

 

n = 203

n = 178

 

n = 160

 
  1. Baseline values of pain and disability for the index and control groups, changes in the mean of the outcomes for patients taking part in the follow-up at 26 and 52 weeks, compared with baseline and differences in mean change between groups.
  2. * The difference in the group mean of the outcomes at follow-up compared to baseline.
  3. † The difference between the Index Group and Control Group with regard to change of group mean at follow-up.