Table 4.

Sample statistics for characteristics of sample population: mean followed by standard deviation

Variable	CA		CT		GA		IA		KY
Sample size	86,843		23,402		10,316		22,799		18,203
	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD
Female	0.670	0.470	0.709	0.454	0.713	0.453	0.698	0.459	0.668	0.471
Disability or ESRD original reason for enrollment in Medicare	0.002	0.050	0.004	0.062	0.003	0.057	0.004	0.065	0.001	0.036
Age 73–80 in 2000	0.377	0.480	0.394	0.490	0.355	0.480	0.378	0.480	0.347	0.480
Age 80+ in 2000	0.155	0.360	0.172	0.380	0.139	0.350	0.175	0.380	0.128	0.330
White	0.789	0.408	0.945	0.229	0.783	0.412	0.986	0.117	0.946	0.227
Asian	0.079	0.270	0.004	0.066	0.004	0.067	0.001	0.034	0.001	0.036
African American	0.045	0.207	0.039	0.193	0.204	0.403	0.008	0.092	0.050	0.217
Hispanic	0.048	0.214	0.006	0.077	0.003	0.058	0.001	0.027	0.000	0.017
Native American	0.003	0.056	0.000	0.022	0.000	0.017	0.000	0.021	0.000	0.013
All other races/ethnicities	0.036	0.185	0.006	0.077	0.005	0.071	0.003	0.056	0.003	0.052
Moved to new ZIP code 2000–2002	0.073	0.261	0.060	0.237	0.084	0.277	0.030	0.172	0.037	0.189
Moved to new ZIP code 2003–2005	0.089	0.285	0.051	0.220	0.088	0.284	0.045	0.208	0.046	0.209
Proportion of months with dual eligibility 2000–2002	0.213	0.402	0.066	0.234	0.089	0.276	0.050	0.208	0.121	0.317
Proportion of months with dual eligibility 2003–2005	0.232	0.415	0.093	0.279	0.113	0.304	0.072	0.246	0.141	0.336
Average distance to closest endoscopy provider, 2000–2002	1.256	3.363	0.951	1.938	1.416	2.622	3.612	5.385	2.695	4.508
Average distance to closest endoscopy provider, 2003–2005	1.257	3.318	0.954	1.942	1.487	2.692	3.554	5.354	2.676	4.489
Had CRC diagnosis by 2002	0.138	0.345	0.192	0.394	0.155	0.362	0.203	0.402	0.120	0.325
Had CRC diagnosis by 2005	0.158	0.365	0.207	0.405	0.169	0.375	0.214	0.410	0.135	0.342
Had breast cancer diagnosis by 2002	0.227	0.419	0.293	0.455	0.273	0.446	0.272	0.445	0.150	0.357
Had breast cancer diagnosis by 2005	0.241	0.428	0.306	0.461	0.288	0.453	0.285	0.451	0.162	0.369
Had irritable bowel disease in 2000–2002	0.015	0.123	0.014	0.116	0.013	0.112	0.009	0.094	0.012	0.111
Had irritable bowel disease in 2003–2005	0.016	0.125	0.017	0.130	0.015	0.120	0.010	0.098	0.012	0.109
Had HMO coverage 1998–1999	0.151	0.358	0.234	0.423	0.113	0.317	0.009	0.095	0.039	0.194
Had HMO coverage 2001–2002	0.109	0.312	0.124	0.330	0.056	0.231	0.004	0.065	0.022	0.147
Months with MA HMO coverage, 2000–2002	2.787	7.748	3.794	8.079	1.860	6.035	0.094	1.307	0.616	3.531
Months with MA HMO coverage, 2003–2005	0.577	3.474	0.157	1.805	0.652	2.966	0.333	2.370	0.097	1.449
Months with no Part B coverage, 2000–2002	0.109	1.158	0.065	0.836	0.087	0.967	0.037	0.560	0.055	0.819
Months with no Part B coverage, 2003–2005	0.103	1.499	0.036	0.915	0.039	0.910	0.009	0.452	0.026	0.769

Variable	LA		MI		NJ		NM		UT		WA
Sample size	15,717		25,692		35,378		7,439		8,777		17,511
	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD
Female	0.678	0.467	0.713	0.453	0.673	0.469	0.655	0.475	0.674	0.469	0.696	0.460
Disability or ESRD original reason for enrollment in Medicare	0.002	0.046	0.004	0.066	0.001	0.037	0.003	0.056	0.003	0.057	0.004	0.064
Age 73–80 in 2000	0.346	0.480	0.387	0.490	0.384	0.490	0.342	0.470	0.360	0.480	0.384	0.490
Age 80+ in 2000	0.126	0.330	0.151	0.360	0.145	0.350	0.128	0.330	0.141	0.350	0.158	0.360
White	0.787	0.410	0.824	0.381	0.887	0.317	0.850	0.357	0.971	0.168	0.931	0.253
Asian	0.002	0.043	0.005	0.070	0.008	0.090	0.002	0.043	0.006	0.077	0.023	0.151
African American	0.203	0.402	0.163	0.369	0.079	0.270	0.012	0.108	0.003	0.052	0.018	0.134
Hispanic	0.003	0.057	0.003	0.051	0.017	0.130	0.090	0.286	0.009	0.094	0.003	0.052
Native American	0.001	0.035	0.000	0.020	0.000	0.018	0.038	0.191	0.003	0.056	0.006	0.077
All other races/ethnicities	0.004	0.063	0.006	0.075	0.008	0.090	0.009	0.092	0.008	0.090	0.018	0.133
Moved 2000–2002	0.039	0.195	0.070	0.255	0.060	0.238	0.078	0.269	0.046	0.210	0.086	0.280
Moved 2003–2005	0.054	0.226	0.071	0.257	0.060	0.238	0.059	0.236	0.068	0.252	0.093	0.291
Proportion of months with dual eligibility 2000–2002	0.155	0.352	0.062	0.234	0.073	0.252	0.121	0.317	0.032	0.170	0.062	0.233
Proportion of months with dual eligibility 2003–2005	0.185	0.379	0.070	0.247	0.090	0.278	0.143	0.340	0.043	0.193	0.078	0.258
Average distance to closest endoscopy provider, 2000–2002	3.158	5.704	0.653	1.861	0.791	1.668	4.715	9.935	1.926	5.330	1.554	3.404
Average distance to closest endoscopy provider, 2003–2005	3.127	5.674	0.680	1.941	0.792	1.687	4.733	9.809	1.916	5.302	1.554	3.362
Had CRC diagnosis by 2002	0.112	0.316	0.176	0.381	0.133	0.340	0.141	0.348	0.135	0.342	0.159	0.366
Had CRC diagnosis by 2005	0.126	0.332	0.197	0.397	0.151	0.358	0.153	0.360	0.147	0.354	0.172	0.377
Had breast cancer diagnosis by 2002	0.147	0.354	0.291	0.454	0.160	0.366	0.248	0.432	0.266	0.442	0.316	0.465
Had breast cancer diagnosis by 2005	0.162	0.368	0.306	0.461	0.174	0.379	0.260	0.439	0.279	0.449	0.329	0.470
Had irritable bowel disease in 2000–2002	0.009	0.096	0.016	0.126	0.018	0.134	0.013	0.112	0.012	0.108	0.013	0.113
Had irritable bowel disease in 2003–2005	0.010	0.098	0.018	0.135	0.020	0.138	0.014	0.117	0.014	0.118	0.013	0.113
Had HMO coverage 1998–1999	0.157	0.364	0.070	0.255	0.131	0.337	0.093	0.291	0.126	0.332	0.154	0.361
Had HMO coverage 2001–2002	0.086	0.280	0.076	0.266	0.071	0.258	0.023	0.150	0.007	0.084	0.057	0.232
Months with MA HMO coverage, 2000–2002	1.973	6.121	1.747	6.130	1.861	6.162	1.143	4.112	0.130	1.579	2.044	5.942
Months with MA HMO coverage, 2003–2005	0.410	2.815	0.078	1.100	0.229	2.132	0.833	4.349	0.347	1.908	0.261	2.386
Months with no Part B coverage, 2000–2002	0.066	0.843	0.068	0.886	0.086	0.981	0.076	0.889	0.090	1.024	0.066	0.841
Months with no Part B coverage, 2003–2005	0.027	0.758	0.024	0.715	0.044	1.014	0.044	1.029	0.040	1.013	0.044	0.976