Table 1.

Comparison of Respondents and Nonrespondents and Additional Characteristics of Respondents’ Practices

	Respondents, %		Nonrespondents, %
Physician and Practice Characteristics	Peds (n = 356)	FM (n = 348)	Peds (n = 84)	FM (n = 116)
Female sex	65	48*	62	32*
Setting
Private practice	76	66	81	73
Hospital or clinic	22	23	17	19
HMO	2	10	2	8
Location
Urban, inner city	14	39	17	30
Urban, not inner city	75	53	77	59
Rural	11	8	6	11
Region
Midwest	21	30*	14	25*
Northeast	22	14	24	13
South	33	33	42	45
West	24	23	20	17
Mean age in years (SD)	50.4 (10.4)	53.4 (7.9)	50.2 (11.6)	53.6 (8.0)
Proportion of patients age 0 to 10 years
< 10%	2	47
10%–29%	1	24
30%–49%	16	13
≥ 50%	81	15
Proportion of patients age 11 to 18 years
< 10%	1	37
10%–29%	21	32
30%–49%	70	17
≥ 50%	7	15
Proportion of patients with Medicaid or CHIP
< 10%	23	36
10%–24%	19	26
25%–49%	22	19
≥ 50%	37	19
Proportion of Hispanic/Latino patients
< 10%	43	62
10%–24%	30	22
≥ 25%	27	16
Proportion of black/African American patients
< 10%	43	66
10%–24%	35	23
≥ 25%	22	11

CHIP indicates Children’s Health Insurance Program; FM, family physicians; HMO, health maintenance organization; and Peds, pediatricians.

^*P ≤ .05 for comparison between responders and nonresponders.