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Table 3 Multiple regression model (backward) adjusted for treatment group, gender and age with Beta values, 95% CI for Beta, the Shoulder Pain and Disability Index (SPADI) at 1 year as the dependent variable and the total percentage of variance (R2)

From: Predictors of Shoulder Pain and Disability Index (SPADI) and work status after 1 year in patients with subacromial shoulder pain

SPADI

 

Beta

95% CI for Beta

p-value

n = 94

   

Education (0,1)

-14.3

(-23.5 to -5.2)

p = 0.003

Previous shoulder pain (0,1)

11.0

(1.4 to 20.6)

p = 0.026

Baseline SPADI

0.37

(0.15 to 0.59)

p = 0.001

  1. Total R2      29.9%
  2. Age, treatment group and gender were adjusted for in the model
  3. Education (0: ≤ 12 years in school, 1: University/College)
  4. Previous shoulder pain (0: no, 1: yes)