. Author manuscript; available in PMC: 2010 Jan 1.

Published in final edited form as: J Pediatr. 2008 Aug 29;154(1):111–115. doi: 10.1016/j.jpeds.2008.07.017

Table 2.

Prevalence by Year

	1992 (n=152)	2004 (n=331)

Prevalence Questions (% answering yes by year)
Frequent Wheezing not associated with colds or flu in past year?	43 (36–52)	48 (43–54)
Ever Diagnosed with Asthma?	28 (21–36)	28 (24–34)
Current Asthma?	18 (12–24)	20 (16–25)
Prevalence Groups (% of four groups by year)
1 - No frequent wheezing, no previous diagnosis, no current asthma	48 (40–57)	46 (40–51)
2 - Previous diagnosis but no current asthma	10 (6–16)	8 (5–12)
3 - Current asthma	18 (12–25)	20 (16–25)
4 - Frequent wheezing, no previous diagnosis or current asthma	24 (17–31)	26 (21–31)

Data reported as percentages by year, 95% CI based on exact binomial distribution method