Table 6 Reliability evidence grading
From: Elastography in the assessment of the Achilles tendon: a systematic review of measurement properties
Reliability | Summary or pooled ICC result | Overall rating of good measurement properties | Quality of evidence | |
|---|---|---|---|---|
Strain elastography | Intra rater same day | Total sample size—176 | Sufficient | Moderate (downgraded for inconsistency) |
Longitudinal > 0.7 | ||||
Total sample size—58 | Sufficient | Moderate (downgraded for imprecision sample size < 100) | ||
Transverse < 0.45 | ||||
Intra rater different days | Total sample size—20 | Insufficient | / | |
Longitudinal > 0.1–0.87 | ||||
Transverse > 0.1 | ||||
Inter-rater | Total sample size—110 | Sufficient | Moderate (downgraded for inconsistency) | |
Longitudinal = 0.51–0.79 | ||||
Assessed in one article | Insufficient | / | ||
Total sample size—50 | ||||
Transverse = 0.41 | ||||
Shear wave velocity | Intra rater same day | Assessed in one article | Â | / |
Total sample size—14 |  | |||
Longitudinal = 0.55–0.67 | Insufficient | |||
Transverse = 0.78–0.85 | Insufficient | |||
Intra rater different days | Total sample size—36 | Sufficient | Very Low (downgraded 2 for imprecision sample size < 50 & inconsistency) | |
Longitudinal = 0.54–0.71 | ||||
Assessed in one article | Insufficient | / | ||
Total sample size—14 | ||||
transverse = 0.62–0.71 | ||||
Inter-rater | Total sample size—665 | Sufficient | Moderate (downgraded for inconsistency) | |
Longitudinal = 0.455–0.923 | ||||
Total sample size—655 | Sufficient | Moderate (downgraded for indirectness) | ||
Transverse = 0.7–0.87 | ||||
Shear wave modulus | Intra rater same day | Assessed in one article | Insufficient | / |
Total sample size—7 | ||||
Compression modulus = 0.42–0.85 | ||||
Intra rater different days | Assessed in one article | Insufficient | / | |
Total sample size—20 | ||||
Shear modulus = 0.82–0.88 | ||||
Inter-rater | Assessed in one article | Insufficient | / | |
Total sample size—20 | ||||
Shear modulus = 0.77–0.93 | ||||
cSWE | Intra rater same day | Total sample size—78 | Sufficient | Low (downgraded for imprecision sample size < 100 and indirectness) |
shear modulus = 0.7–0.88 | ||||
viscosity modulus = 0.87–0.88 | ||||
Intra rater different days | Assessed in one article | Insufficient | / | |
Total sample size—20 | ||||
shear modulus = 0.7 | ||||
viscosity modulus = 0.87 | ||||
3D SWE | Intra rater different days | Assessed in one article | Insufficient | / |
Total sample size—10 | ||||
0.59 | ||||
Inter-rater | Assessed in one article | Insufficient | / | |
Total sample size—10 | ||||
0.44 | ||||