Childhood Asthma Utilization Rates in a Nonsmoking Population of Utah Compared to State and National Rates

Table 4

Age-specific asthma services prevalence per 1000 and rate ratios for the DMBA^a and United States^b, 1997–2002.

	Prevalence per 1000
Age (yr)	DMBA	US	Rate ratio (95% confidence interval)
0–4	24.73	75.79	3.06 (2.77–3.37)
5–11	23.36	126.15	5.40 (5.02–5.80)
12–17	22.92	146.23	6.38 (5.97–6.82)

^aDMBA prevalence was determined by dividing all individuals with an asthma claim (ICD-9 codes 493.00–493.99) by the population of those less than18 years of age in that year.
^bNational Health Interview Survey.