TABLE 2—

Decomposition of Differences in Up-to-Date Colorectal Cancer Screening Rates: Behavioral Risk Factor Surveillance System, United States, 2002–2008

Decomposition	Black/Non-Hispanic Whitea	Asian/Non-Hispanic Whitea	Native American/ Non-Hispanic Whitea	Hispanic/Non-Hispanic Whitea
Overall
Total estimated difference	−0.028	0.076	0.080	0.099
Total explained by differences in observed characteristics	0.018	0.004	0.077	0.082
Differences attributable to
Female	0.000	0.000	0.000	0.000
Age	0.000	0.006**	0.005**	0.004**
Self-reported health status	−0.006**	0.002**	−0.008**	−0.008**
Previous smoker	−0.000*	−0.002*	0.001*	−0.000*
Diabetes	−0.003**	−0.001*	−0.002**	−0.002*
Obesity	−0.000	−0.000	0.000	0.000
CRC mortality rateb	−0.016	0.031	0.016	0.024
Income	0.023**	−0.001*	0.021**	0.024**
Education	0.013**	−0.012**	0.016**	0.024**
Marital status	0.006**	−0.002**	0.002**	0.002*
Regular doctor	−0.001**	−0.002**	0.015**	0.014**
Living in HPSA county	0.000	−0.000	0.000	−0.000
No. of geographical HPSAs in county	0.001	0.003	0.001	0.005
State HMO penetration	−0.001	0.012	0.004	0.011
% of county in poverty	0.004*	−0.000*	0.002*	0.003*
% of county rural	−0.005**	−0.008*	0.000**	−0.006**
State of residence	0.000	−0.011	−0.000	−0.012
Survey year	0.001**	0.001**	0.001**	−0.001**
Survey month	−0.000	−0.000	0.000	0.000
Total, no.	185 213	173 535	172 817	175 025
Minority, no.	14 603	2 952	2 234	4 442

Note. CRC = colorectal cancer; HMO = health maintenance organization; HPSA = Health Professional Shortage Area. Results based on Fairlie decomposition technique for nonlinear models with random ordering of covariates. H₀: Difference attributable to covariate is equal to 0. Hispanic ethnicity and race are not mutually exclusive designations. A full set of results including a description of the Fairlie method is available as a supplement to the online version of this article at http://www.ajph.org.

^aExcluding Hispanic Whites.

^bCRC mortality rates come from Surveillance, Epidemiology, and End Results data from deaths between 1990 and 1999 and vary by race, gender, and state.

*P < .05; **P < .01.