Validation of epidemiological tools for eczema diagnosis in brazilian children: the isaac's and uk working party's criteria

Table 3 Consistency of diagnosis of eczema between 1^st and 2^nd questionnaire

	all pairs			same respondent			same respondent and same observer
ISAAC coding 1 ^st questionnaire	2 ^nd questionnaire			2 ^nd questionnaire			2 ^nd questionnaire
	Yes	No	Total	Yes	No	Total	Yes	No	Total
Yes	33	58	91	28	35	63	14	19	33
No	34	515	549	27	373	400	14	195	209
Total	67	573	640	55	408	463	28	214	242
	kappa = 0.34 95% CI 0.26-0.41			kappa = 0.40 95% CI 0.31-0.49			kappa = 0.38 95% CI 0.26-0.51
UKWP coding 1 ^st questionnaire	2 ^nd questionnaire			2 ^nd questionnaire			2 ^nd questionnaire
	Yes	No	Total	Yes	No	Total	Yes	No	Total
Yes	12	28	40	12	19	31	7	12	209
No	21	579	600	13	419	431	4	219	33
Total	33	607	640	25	438	463	11	231	242
	kappa = 0.29 95% CI 0.21-0.37			kappa = 0.39 95% CI 0.30-0.48			kappa = 0.43 95% CI 0.31-0.56

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