TABLE 1.

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

Characteristic	Total Respondents (n = 534)	Total Nonrespondents (n = 281)	Pediatric Respondent (n = 282)	FM Respondent (n = 252)
Male, %a	45	55	40	52
Mean age (SD), y	51.6 (10.3)	51.5 (9.9)	51.1 (10.4)	52.3 (10.2)
Region of the Country, %a
Midwest	24	25	21	28
Northeast	21	16	22	20
South	32	41	34	30
West	23	18	24	22
Practice location, %
Urban, inner city	35	32	43	26
Urban, non–inner city/suburban	46	47	44	48
Rural	19	21	12	27
Practice setting, %
Private practice	75	76	78	72
Community or hospital based	19	20	16	23
HMO or MCO	6	4	6	6
Median providers in practice, n	5		6	5
Proportion of VFC participants, %	79	—	84	71
Proportion of patients <2 y, %
<10	40	—	7	76
10–24	31	—	40	21
25–49	25	—	44	3
≥50	5	—	9	0
Proportion of privately insured patients, %
0–24	20	—	17	23
25–49	21	—	21	21
≥50	59	—	61	56
Proportion of Medicaid/SCHIP patients, %
0–24	58	—	51	67
25–49	21	—	26	16
≥50	21	—	23	17
Proportion of uninsured patients, %
0–24	96	—	98	93
25–49	3	—	2	5
≥50	1	—	0	2
Patient race/ethnicity, %
Black/African American
<10%	51	—	45	59
≥10%	49		55	41
Hispanic/Latino
<10%	53	—	46	61
≥10%	47		54	39
Asian/Pacific Islander
<10%	83	—	77	90
<10%	17	—	23	10

FM, family medicine; Peds, pediatrics; HMO, health maintenance organization; MCO, managed care organization; SCHIP, State Children’s Health Insurance Program; VFC, Vaccines for Children program.

^aP < .05 for comparison of respondents and nonrespondents.