Table 3.

Questionnaire^a Asthma Diagnosis versus Health Claims^b Diagnosis, excluding children with "asthma-related symptoms" (n = 1826)

	Health Claims +	Health Claims -	Total
Questionnaire +	346	91	437
Questionnaire -	68	1321	1389
Total	414	1412	1826

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

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

Kappa = 0.75 (95% CI = 0.72, 0.79)

Sensitivity = 83.57% Specificity = 93.56% (Health Claims Reference Standard)