Medical Diagnostic Tests: A Review of Test Anatomy, Phases, and Statistical Treatment of Data

Table 6

Intra- and interclass correlation coefficients and concordance correlation coefficient: an empirical assessment of the strength of agreement.

Agreement	Continuous measurement	Ultrasound fetal measurements	Semiautomated measurements
Very good	ρc > 0.99	ρc > 0.998	ρc > 0.90
Good	0.95 < ρc ≤ 0.99	0.99 < ρc ≤ 0.998	0.80 < ρc ≤ 0.90
Moderate	0.90 < ρc ≤ 0.95	0.98 < ρc ≤ 0.99	0.65ρc ≤ 0.80
Poor	0.70 < ρc ≤ 0.90	0.95 < ρc ≤ 0.98	ρc < 0.65
Very poor	ρc < 0.70	ρc < 0.95

Source [141, 142].