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Table 4 Interaction between treatment group and significant baseline predictor variables for back related dysfunction (Roland score).

From: Characteristics of patients with chronic back pain who benefit from acupuncture

Treatment

 

Roland, 8-week*

Roland, 52-week*

group

Predictor variable

β**

SE

P-value

β**

SE

P-value

Individualized acupuncture

Baseline Roland score

-0.48

0.12

<.0001

-0.23

0.13

0.07

 

Baseline bothersomeness score

0.30

0.26

0.25

-0.13

0.28

0.64

 

Age

-0.01

0.05

0.86

-0.02

0.05

0.64

 

Gender

0.93

1.24

0.45

-0.68

1.30

0.60

 

Employment, heavy lifting

4.29

1.97

0.03

5.19

2.05

0.01

 

Employment, light/medium lifting

-0.34

1.62

0.83

2.18

1.69

0.20

 

Employment, sedentary

1.34

1.67

0.42

2.73

1.76

0.12

 

Medication use, narcotics

3.52

1.99

0.08

1.85

2.06

0.37

 

Medication use, other

0.91

1.23

0.46

0.45

1.29

0.73

 

Self-efficacy

-6.17

2.98

0.04

-3.46

3.46

0.32

 

Acupuncture expectation, top tertile

-2.65

1.34

0.05

-0.98

1.42

0.49

 

Acupuncture expectation, could not rate

1.43

1.57

0.36

-0.28

1.64

0.86

Standardized acupuncture

Baseline Roland score

-0.37

0.13

0.004

-0.24

0.13

0.07

 

Baseline bothersomeness score

0.47

0.29

0.10

0.05

0.31

0.88

 

Age

0.08

0.05

0.08

0.07

0.05

0.15

 

Gender

0.90

1.19

0.45

1.57

1.25

0.21

 

Employment, heavy lifting

3.00

1.97

0.13

3.03

2.08

0.15

 

Employment, light/medium lifting

-0.84

1.62

0.60

-0.67

1.69

0.69

 

Employment, sedentary

1.00

1.63

0.54

2.47

1.72

0.15

 

Medication use, narcotics

2.20

1.91

0.25

4.06

1.98

0.04

 

Medication use, other

0.46

1.24

0.71

1.21

1.30

0.35

 

Self-efficacy

-2.91

3.32

0.38

1.67

3.49

0.63

 

Acupuncture expectation, top tertile

-1.26

1.31

0.34

-1.90

1.38

0.17

 

Acupuncture expectation, could not know

1.17

1.56

0.45

1.27

1.63

0.44

Simulated acupuncture

Baseline Roland score

-0.41

0.13

0.001

-0.07

0.13

0.62

 

Baseline bothersomeness score

0.13

0.26

0.62

-0.19

0.27

0.48

 

Age

0.02

0.05

0.65

0.05

0.05

0.33

 

Gender

-0.48

1.22

0.69

-0.24

1.28

0.85

 

Employment, heavy lifting

2.73

2.04

0.18

4.45

2.13

0.04

 

Employment, light/medium lifting

0.02

1.66

0.99

-1.59

1.77

0.37

 

Employment, sedentary

-0.85

1.72

0.62

1.57

1.82

0.39

 

Medication use, narcotics

4.81

1.96

0.01

2.71

2.05

0.19

 

Medication use, other

1.17

1.24

0.35

1.60

1.32

0.23

 

Self-efficacy

0.19

2.25

0.93

1.97

2.42

0.42

 

Acupuncture expectation, top tertile

-0.90

1.28

0.48

-2.91

1.35

0.03

 

Acupuncture expectation, could not know

0.62

1.59

0.70

-0.17

1.66

0.92

  1. * For ease of identification, all independent variables with P < 0.5 are in boldface type
  2. ** The parameter estimates β refer to the amount of change in the outcome that is based on a one unit change in that covariate (continuous variables) or a change in category (categorical variables)
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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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