Table 2.

Questionnaire^a Asthma Diagnosis versus Health Claims^b Diagnosis (n = 2782)

	Health Claims +	Health Claims -	Total
Questionnaire +	346	91	437
Questionnaire -	240	2105	2345
Total	586	2196	2782

^a Positive response to questions "Has your child ever had asthma?" and "Was this diagnosed by a physician?"

^bAlgorithm of one asthma hospitalization and/or two asthma physician visit claims within two years

Kappa = 0.60 (95% CI 0.56, 0.64)

Sensitivity = 59.04% Specificity = 95.86% (Health Claims reference standard)