Table 5.

Response rates at adult and pediatric sites. Demographic characteristics are based on sampling strata defined by the combined EHR and USC data

	Adult Sites		Pediatric Sitesa
	N	Response Rate	N	Response Rate
Eligible	54 850	16.7	27 389	13.9
Age
Low age group	23 613	10.3	15 115	13.2
High age group	31 237	21.6	12 274	14.8
Gender
Female	29 169	17.4	13 581	13.9
Male	25 681	16.0	13 808	14.0
Race
White	19 099	20.1	9319	16.0
African American	9703	13.2	5877	10.0
Asian	8944	17.1	4171	18.5
AI/AN	3981	17.4	699	13.9
NH/PI	2711	13.4	496	9.7
Other	10 502	14.2	6827	12.0
Ethnicity
Not Hispanic /Latino	38 119	17.9	19 022	15.3
Hispanic /Latino	16 731	14.2	8367	10.8
Education
< HS	6457	13.6	3414	9.0
HS + some college	30 007	16.1	13 378	12.9
≥ Bachelor’s	18 386	18.9	10 597	16.8
Rurality
Rural	20 980	18.7	10 099	15.6
Suburban/Urban	33 870	15.5	17 290	13.0

Low age group (< 12 in pediatric sites, < 35 in adult sites), high age group (≥ 12 in pediatric sites, ≥ 35 in adult sites), AI/AN = American Indian/Alaska Native, NH/PI = Native Hawaiian/Pacific Islander, HS = high school.

^aResponse rates from pediatric sites correspond to the parent/guardian of children with the associated demographic characteristic.