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Table 1 Intra-rater reliability of 3D %fat in superior to inferior quartile (Q1-Q4) regions in patients (N = 13) with rotator cuff pathology

From: Development of 3D method to assess intramuscular spatial distribution of fat infiltration in patients with rotator cuff tear: reliability and concurrent validity

Intra-rater Reliability

 

3D %Fat

Rotator Cuff Muscle

Absolute

Relative

Intramuscular region

ICC

95% CI

Mean

SEM

MDC

Supraspinatus (whole)

 Q1

0.960

0.872, 0.988

13.85

1.74

2.46

 Q2

0.991

0.971, 0.997

12.85

0.73

1.04

 Q3

0.988

0.961, 0.996

12.43

0.85

1.20

 Q4

0.927

0.770, 0.977

14.19

2.38

3.36

Infra/Teres (whole)

 Q1

0.993

0.977, 0.998

10.38

0.55

0.78

 Q2

0.994

0.981, 0.998

11.42

0.61

0.86

 Q3

0.984

0.948, 0.995

12.50

0.96

1.36

 Q4

0.945

0.821, 0.983

10.96

1.54

2.18

Subscapularis (whole)

 Q1

0.782

0.280, 0.934

13.04

2.95

4.17

 Q2

0.996

0.987, 0.999

13.77

0.54

0.77

 Q3

0.998

0.994, 0.999

13.77

0.44

0.64

 Q4

0.995

0.963, 0.999

15.35

0.75

1.06

  1. ICC intraclass correlation coefficient, 95% CI, 95% confidence interval, SEM standard error of the measure, MDC minimal detectable change
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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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