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Table 2 Reliability of the PRTEE-S (Patientskattad Utvärdering av Tennisarmbåge).

From: Cross-cultural adaptation and determination of the reliability and validity of PRTEE-S (Patientskattad Utvärdering av Tennisarmbåge), a questionnaire for patients with lateral epicondylalgia, in a Swedish population

  

Occasion 1

Occasion 2

Pain section

Mean Score ± SD

4.18 ± 1.81

3.77 ± 1.80

 

SEM

0.25

0.25

 

95% CI

0.21 – 0.78

0.23 – 0.79

 

Cronbachs α

0.84

0.83

 

ICC

0.58

0.60

Function section

Mean Score ± SD

3.90 ± 2.38

3.70 ± 2.29

 

SEM

0.32

0.31

 

95% CI

0.85 – 0.94

0.84 – 0.94

 

Cronbachs α

0.93

0.92

 

ICC

0.91

0.90

Overall (pain + function)

Mean Score ± SD

4.04 ± 2.00

3.74 ± 1.97

 

SEM

0.27

0.27

 

95% CI

0.84 – 0.94

0.84 – 0.94

 

Cronbachs α

0.94

0.94

 

ICC

0.90

0.90

  1. Comparison of the PRTEE-S score for patients (n = 54) on two occasions, on the two sub-scales (pain and function score) and the total questionnaire (overall score).