Table 4.

Comparison of measured and estimated 24 h urinary sodium excretion in study subjects.

Method	Bias (Mean ± SD)	95% CI	LOA
Kawasaki	−47.82 ± 79.16	−55.54 to −40.09	107.33 to −202.97
Tanaka	−8.43 ± 69.16	−15.17 to −1.69	127.11 to −143.97
INTERSALT1	2.28 ± 67.40	−4.29 to 8.85	134.39 to −129.83
lNTERSALT2	1.08 ± 67.33	−5.50 to 7.65	133.06 to −130.89
Toft	−24.81 ± 68.48	−31.49 to −18.13	109.42 to −159.04
Whitton	15.97 ± 68.99	9.24 to 22.69	−119.24 to 151.18
Mage	15.68 ± 102.49	5.69 to 25.68	216.56 to −185.2

SD: standard deviation, CI: confidence interval, LOA: limit of agreement.