From: Measurement error of mean sac diameter and crown-rump length among pregnant women at Mulago hospital, Uganda
Paired set of measurements
ICC*
95% CI*
Intra-observer variation (CRL*)
 Observer 1
0.993
(0.988, 0.996)
 Observer 2
0.995
(0.992, 0.997)
Inter-observer variation
 CRL*
0.988
(0.980, 0.993)
 MSD*
0.955
(0.924, 0.973)