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Table 2 Cumulative incidence (%) of asthma and wheeze between ages 12 to 18 years by method of measure.

From: Conventional epidemiology underestimates the incidence of asthma and wheeze-a longitudinal population-based study among teenagers

   Boys Girls  
Condition Method (n) Incidence % (n) Incidence % Difference p-value
Ever asthma AR (100) 9.09 (158) 13.57 < 0.001
  BE (66) 6.00 (109) 9.36 0.003
Physician-diagnosed AR (64) 5.82 (103) 8.85 0.006
asthma BE (50) 4.54 (79) 6.79 0.021
Current asthma AR (56) 5.09 (91) 7.82 0.008
  BE (38) 3.45 (67) 5.76 0.009
Current wheeze AR (178) 17.33 (270) 24.82 < 0.001
  BE (61) 5.94 (120) 11.03 < 0.001
  1. AR: Incidence based on the annual reports
  2. BE: Incidence based on the baseline and endpoint surveys only