Table 4

Agreement between the test variables with the best cut-off values.

Variables

H2 +CH4x2 <18 ppm

H2 + CH4 <17 ppm

H2 < 16 ppm

s-glucose > 0.9 mmol/L


H2 + CH4 < 17 ppm

0.91 (p < 0.001)

-----

-----

-----

H2 < 16 ppm

0.81 (p < 0.001)

0.90 (p < 0.001)

-----

-----

s-glucose > 0.9 mmol/L

0.44 (p = 0.001)

0.50 (p < 0.001)

0.46 (p = 0.001)

-----

Any symptom-ELL

0.38 (p = 0.002)

0.43 (p < 0.001)

0.41 (p < 0.001)

0.25 (p = 0.032)


The results are given as kappa values with statistics (p-values) in brackets.

Hovde and Farup BMC Gastroenterology 2009 9:82   doi:10.1186/1471-230X-9-82

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