. 2005 Dec 15;3(1):A09.

Table 2.

Effects of Race, Linguistic Isolation, and Other Variables on County-level Participation Rates (N = 1894), 2003 Behavioral Risk Factor Surveillance System

Characteristic	Resolution Rate^a		Screening Rate^b		Cooperation Rate^c		Response Rate^d		Language-Barrier Rate^e		Refusal Rate^f
Characteristic	β^g (SE)	P	β^g (SE)	P	β^g (SE)	P	β^g (SE)	P	β^g (SE)	P	β^g (SE)	P
% Black residents ≥18 y	−0.03 (0.01)	.001	−0.18 (0.02)	.001	−0.13 (0.01)	.001	−0.06 (0.01)	.001	<0.01 (<0.01)	.07	0.06 (0.01)	.001
% Spanish-language–only households	−0.11 (0.05)	.04	−0.92 (0.11)	.001	−0.58 (0.09)	.001	−0.26 (0.04)	.001	0.12 (0.01)	.001	−0.03 (0.08)	.71
% Asian-language–only households	−0.48 (0.22)	.03	−0.98 (0.45)	.03	−0.24 (0.38)	.53	−0.21 (0.18)	.24	0.14 (0.03)	.001	−1.90 (0.31)	.001
% Indo-European-language–only households	−0.12 (0.15)	.44	−1.36 (0.31)	.001	−1.39 (0.26)	.001	−0.64 (0.12)	.001	0.12 (0.02)	.001	0.82 (0.21)	.001
% Calls that reached answering machines	0.11 (0.01)	.001	−0.19 (0.03)	.001	0.10 (0.02)	.001	0.04 (0.01)	.001	<−0.01 (<0.01)	.001	−0.02 (0.02)	.29
% Households with heads who commute ≥30 minutes one-way to work	−0.04 (0.01)	.001	−0.13 (0.02)	.001	−0.05 (0.02)	.01	−0.05 (0.01)	.001	<0.01 (<0.01)	.02	0.09 (0.02)	.001
% Households with income ≥$50,000	−0.18 (0.01)	.001	−0.30 (0.03)	.001	−0.18 (0.02)	.001	−0.17 (0.01)	.001	<0.01 (<0.01)	.11	0.22 (0.02)	.001
% Adults aged ≥25 y with <high school education	−0.06 (0.02)	.007	−0.06 (0.04)	.16	−0.04 (0.04)	.24	−0.04 (0.01)	.013	<−0.01 (<0.01)	.51	0.15 (0.03)	.001

Resolution rate = (number of cases determined to be households/total number of cases) ×100%. Intercept: β (SE) = 91.01 (0.81); P = .001. Adjusted R² = 0.18.

Screening rate = (number of households where eligibility is determined/total number of households) ×100%. Intercept: β (SE) = 93.65 (1.66); P = .001. Adjusted R² = 0.30.

Cooperation rate = (number of completed interviews/number of confirmed eligible households) ×100%. Intercept: β (SE) = 83.24 (1.38); P = .001. Adjusted R² = 0.16.

Response rate = (number of completed interviews/estimated total number of eligible households) ×100%. Intercept: β (SE) = 43.15 (0.64); P = .001. Adjusted R² = 0.31.

Language-barrier rate = (number of cases with language-problem code/total number of cases) ×100%. Intercept: β (SE) = 0.06 (0.09); P = .54. Adjusted R² = 0.27.

Refusal rate = (number of cases with refusal code/total number of cases) ×100%. Intercept: β (SE) = 7.31 (1.14); P = .001. Adjusted R² = 0.17.

β indicates ordinary least squares regression coefficient.