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Table 3 Questionnairea Asthma Diagnosis versus Health Claimsb Diagnosis, excluding children with "asthma-related symptoms" (n = 1826)

From: Verifying a questionnaire diagnosis of asthma in children using health claims data

  Health Claims + Health Claims - Total
Questionnaire + 346 91 437
Questionnaire - 68 1321 1389
Total 414 1412 1826
  1. a Positive answer to questions "Has your child ever had asthma?" and "Was this diagnosed by a physician?"
  2. b Algorithm of one asthma hospitalization and/or two asthma physician visit claims within two years
  3. Kappa = 0.75 (95% CI = 0.72, 0.79)
  4. Sensitivity = 83.57% Specificity = 93.56% (Health Claims Reference Standard)