Table 2.

Race and ethnicity-specific IRs of asthma with recurrent exacerbations (ARE) per 1000 person-years, stratified by child years at follow-up.

	N	Person-years	Number of cases	IR (95% CI)
2 – 4 years	17246	73282	346	18.55 (16.59, 20.52)
Non-Hispanic White	8996	38386	135	14.83 (12.31, 17.34)
Non-Hispanic Black	3069	12829	123	52.33 (42.70, 61.97)
Hispanic White	1703	7150	16	5.78 (2.95, 8.62)
Hispanic Black	214	902	7	26.89 (6.96, 46.82)
Other	3264	14015	65	15.40 (11.65, 19.16)
5 – 9 years	11466	34891	277	4.90 (4.32, 5.47)
Non-Hispanic White	6184	18241	90	2.80 (2.22, 3.37)
Non-Hispanic Black	2163	7617	101	10.88 (8.76, 13.00)
Hispanic White	923	2503	22	4.68 (2.72, 6.64)
Hispanic Black	135	405	7	9.80 (2.52, 17.04)
Other	2061	6126	57	5.87 (4.34, 7.39)
10 – 19 years	3369	13167	111	2.41 (1.96, 2.86)
Non-Hispanic White	1587	6530	34	1.58 (0.19, 2.96)
Non-Hispanic Black	882	3009	56	4.82 (3.56, 6.09)
Hispanic White	230	934	5	1.58 (0.19, 2.96)
Hispanic Black	33	105	<5	4.81 (0, 11.49)
Other	637	2589	<19	1.63 (0.77, 2.48)

Abbreviations: CI=confidence interval; IR=incidence rates

Other child race and ethnicity refers to all categories that do not fit into the mutually exclusive categories described. This includes children who list race as anything other than White or Black, list multiple races, or self-select “don’t know” or “other” on their forms.