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Table 2 Intraclass correlation coefficients of each spot equation and 24-h urine

From: Estimating mean population salt intake in Fiji and Samoa using spot urine samples

Method Fiji Samoa
ICC 95% CI ICC 95% CI
Kawasaki 0.33 0.24 to 0.41 0.50 0.44 to 0.55
Tanaka 0.22 0.12 to 0.31 0.42 0.36 to 0.48
Mage 0.13 0.04 to 0.23 0.29 0.22 to 0.35
INTERSALT without K 0.17 0.08 to 0.26 0.36 0.30 to 0.42
INTERSALT with K 0.13 0.00 to 0.24 0.36 0.30 to 0.42
Toft 0.30 0.21 to 0.39 0.39 0.32 to 0.45
  1. ICC Intraclass correlation coefficient, CI Confidence interval, K Potassium