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Table 4 Parameters for the final multivariable linear regression model (n = 229)

From: Predicting change in symptoms and function in patients with persistent shoulder pain: a prognostic model development study

Variable

Coefficient

95% CI

Stand. coefficient

Baseline QuickDASH

0.61

0.44; 0.78

0.59

Employment status

 Employed/studying

Ref.

  

 Unemployed/subsidised employment/ sick leave

−11.12

−18.63; − 3.60

−0.17

 Pensioner

− 0.22

−5.10; 4.66

− 0.01

Professional educational level

 No education

Ref.

  

 Low (< 2) or vocational

6.03

−0.42; 12.49

0.15

 Medium (3) or high (> 4)

0.94

−5.92; 7.79

0.02

Movement impairment classification

 Hypomobility

Ref.

  

 Hypermobility

−10.36

−17.44; −3.28

−0.19

 Aberrant motion

−8.57

−14.50; −2.63

− 0.21

Self-rated ability to cope with the pain

1.28

0.17; 2.40

0.14

Health-related quality of lifea

12.1

−10.5; 34.8

0.09

Pain catastrophizing

−0.45

−0.94; 0.04

−0.12

Intercept

−19.91

−42.57; 2.76

–

Adjusted coefficient of determination, adjusted R2 = 33.3%

Root MSEa = 16.7

  1. Positive coefficients reflect a decrease in QuickDASH equal to better function and less symptoms. The model had 10 degrees of freedom, corresponding to 23 participants per degree of freedom
  2. Abbreviations: QuickDASH Quick Disabilities of the arm, shoulder and hand, CI confidence interval
  3. aModel standard deviation