Table 4

Interobserver Analysis

MethodAgreement
Difference 2nd–1st ObserverCohen’s Kappa (Linear Weighted)Concordance Correlation 1st With 2nd Observer
MeanSDDLLOAULOAKappa (95% CI)CCC (95% CI)
CA (n = 52)+1.57.2−12.915.90.62 (0.43–0.82)0.85 (0.75–0.91)
4D/3DC-US (n = 52)+4.28.9−13.622.00.68 (0.52–0.84)0.80 (0.68–0.87)
p value CA vs. 4D/3DC-US0.090.560.44

LLOA = lower level of agreement; ULOA = upper level of agreement; other abbreviations as in Tables 1 and 2.