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Table 2 Internal consistency and test-retest reliability for OSS and SPADI and subscales

From: Spanish cultural adaptation and validation of the shoulder pain and disability index, and the oxford shoulder score after breast cancer surgery

 

Test-retest

Internal consistency

(n = 20)

(n = 120)

Test

Retest

ICC

P-value

Cronbach’s α

P-value

Md (IQR)

Md (IQR)

(for ICC)

(for Cronbach’s α)

SPADI

18.1(31.73)

18.85(30.77)

0.992

<0.001

0.965

<0.001

Pain subscale

19(42)

19(36)

0.986

<0.001

0.931

<0.001

Disability subscale

17.5(22.81)

19.38(26.25)

0.991

<0.001

0.953

<0.001

OSS

37.5(10.75)

38(8.75)

0.974

<0.001

0.947

<0.001

  1. Md: Median; IQR: Interquartile range; ICC: Interclass Correlation Coefficients
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Health and Quality of Life Outcomes

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