Table 3

Change in prevalence (%) of symptoms in atopic3-150 and non-atopic children, 1992–1997

Symptoms19921997Percent increase 1992–97 (95% CI)Proportional3-151increase 1992–97
Atopic %
(n = 301)		Non-atopic % (n = 540)Atopic %
(n = 436)		Non-atopic % (n = 519)AtopicNon-atopicAtopicNon-atopic
Wheezed in the past 12 months37.913.339.216.61.4 (−5.8 to 8.5)3.2 (−1.1 to 7.5) 3.624.2
Diagnosed asthma46.321.647.431.31.0 (−6.3 to 8.4)9.7 (4.4 to 15.0) 2.244.9
Ever had asthma medicine49.826.856.037.76.1 (−1.2 to 13.5)10.9 (5.3 to 16.5)12.219.5

  • ↵3-150 Atopic to at least one of D pteronyssinus, rye grass, Alternaria.

  • ↵3-151 Proportional increase = ((1997 prevalence − 1992 prevalence)/1992 prevalence) × 100.