Table 2.

Sample Statistics by person, local area PCSA, and county for covariates in multilevel regression of mammography or endoscopy utilization

State	California		Connecticut		Iowa		Kentuck		Louisiana		New Jersey		New Mexico		Utah
Variable	5% File	100% File	5% File	100% File	5% File	100% File	5% File	100% File	5% File	100% File	5% File	100% File	5% File	100% File	5% File	100% File
Person level (N) – BC Screening Ratio N (5% file)/N (100% file)	38,769	781,832	9,208	177,375	10,010	197,168	10,862	217,727	9,011	184,005	19,394	415,796	3,482	68,114	4,078	78,565
	0.050		0.052		0.051		0.050		0.049		0.047		0.051		0.052
Prop. used mammography 2001–2003	0.555	0.580	0.572	0.593	0.577	0.593	0.522	0.55	0.531	0.551	0.476	0.502	0.526	0.545	0.572	0.578
age75–84	0.385 (0.487)	0.385 (0.487)	0.408 (0.492)	0.405 (0.491)	0.385 (0.487)	0.383 (0.486)	0.362 (0.481)	0.355 (0.478)	0.352 (0.478)	0.360 (0.480)	0.400 (0.490)	0.402 (0.490)	0.334 (0.472)	0.340 (0.474)	0.361 (0.480)	0.363 (0.481)
age 85+	0.116 (0.321)	0.117 (0.321)	0.132 (0.338)	0.135 (0.341)	0.128 (0.335)	0.132 (0.338)	0.098 (0.297)	0.099 (0.299)	0.101 (0.302)	0.103 (0.303)	0.114 (0.318)	0.117 (0.322)	0.091 (0.288)	0.096 (0.295)	0.090 (0.286)	0.093 (0.291)
African American	0.047 (0.211)	0.046 (0.209)	0.044 (0.206)	0.044 (0.204)	0.009 (0.095)	0.008 (0.089)	0.051 (0.221)	0.047 (0.212)	0.219 (0.413)	0.216(0.412)	0.086 (0.281)	0.084 (0.278)	0.013 (0.114)	0.013(0.112)	0.004 (0.063)	0.003 (0.057)
Hispanic	0.051 (0.220)	0.049 (0.215)	0.007 (0.086)	0.008 (0.089)	<11*	0.001 (0.031)	<11*	0.000 (0.018)	0.003 (0.055)	0.003 (0.054)	0.018 (0.133)	0.017(0.128)	0.089 (0.285)	0.088 (0.284)	0.008 (0.091)	0.008 (0.087)
Asian	0.085 (0.279)	0.080 (0.272)	0.006 (0.074)	0.005 (0.071)	<11*	0.001 (0.035)	<11*	0.001 (0.035)	0.002 (0.046)	0.002 (0.045)	0.008 (0.087)	0.008 (0.088)	<11*	0.002 (0.047)	0.006 (0.080)	0.007(0.081)
Native American	0.004 (0.063)	0.001 (0.034)	<11*	0.000 (0.016)	<11*	0.000 (0.017)	<11*	0.000 (0.010)	<11*	0.001 (0.024)	0.001 (0.024)	0.000 (0.016)	0.047 (0.212)	0.029 (0.168)	0.004 (0.063)	0.002 (0.045)
Other race/ethnicity	0.035 (0.183)	0.035 (0.184)	0.008 (0.089)	0.006 (0.078)	0.004 (0.060)	0.004 (0.062)	0.003 (0.057)	0.003 (0.057)	0.004 (0.059)	0.004 (0.066)	0.009 (0.092)	0.009 (0.092)	0.009 (0.094)	0.023 (0.149)	0.010 (0.099)	0.009 (0.094)
disability original reason for Medicare	0.003 (0.053)	0.059 (0.235)	0.005 (0.072)	0.044 (0.206)	0.005 (0.070)	0.039 (0.194)	<11*	0.071 (0.256)	0.003 (0.053)	0.063 (0.242)	0.002 (0.046)	0.052 (0.222)	0.004 (0.066)	0.052 (0.223)	0.004 (0.064)	0.039 (0.193)
have state buy-in Part B coverage	27.888 (44.180)	27.282 (43.836)	10.957 (29.800)	10.740 (29.489)	8.063 (26.012)	8.265 (26.210)	17.223 (36.608)	16.860 (36.256)	22.207 (40.507)	21.427 (39.805)	11.270 (30.666)	11.068 (30.425)	17.689 (36.882)	17.831 (36.976)	5.328 (21.510)	5.363 (21.430)
moved to new home	0.080 (0.272)	0.087(0.281)	0.074 (0.262)	0.071 (0.258)	0.038 (0.192)	0.046 (0.209)	0.043 (0.204)	0.050 (0.217)	0.045 (0.208)	0.052 (0.222)	0.063 (0.243)	0.064 (0.245)	0.076 (0.265)	0.067 (0.249)	0.060 (0.237)	0.063 (0.243)
miles to closest provider	2.161 (3.963)	2.165 (3.964)	1.980 (2.573)	1.984 (2.607)	6.603 (7.237)	6.570 (7.224)	3.742 (5.028)	3.785 (5.019)	5.772 (7.591)	5.835 (7.535)	1.761 (2.728)	1.762 (2.741)	7.947 (13.280)	8.064 (13.356)	4.785 (9.172)	4.743 (8.963)
Person level (N) - CRC Screening	54,536	1,126,335	12,581	245,186	13,774	274,939	0.522	0.55	11,859	244,130	26,055	567,836	5,070	100,328	5,699	113,066
Ratio N (5% file)/N (100% file)	0.048		0.051		0.050		0.049		0.049		0.046		0.051		0.050
Prop. used endoscopy 2001–2005	0.375	0.382	0.425	0.427	0.402	0.395	0.380	0.380	0.365	0.376	0.382	0.396	0.339	0.342	0.405	0.418
female	0.600	0.591	0.630	0.617	0.619	0.611	0.631	0.612	0.644	0.617	0.633	0.621	0.574	0.570	0.589	0.578
age75–84	0.365 (0.481)	0.365 (0.481)	0.386 (0.487)	0.385 (0.487)	0.365 (0.481)	0.362 (0.481)	0.325 (0.469)	0.322 (0.467)	0.319 (0.466)	0.328 (0.469)	0.374 (0.484)	0.378 (0.485)	0.302 (0.459)	0.312 (0.463)	0.344 (0.475)	0.341 (0.474)
age 85+	0.072 (0.258)	0.073 (0.260)	0.080 (0.271)	0.081 (0.274)	0.078 (0.269)	0.081 (0.273)	0.060 (0.237)	0.058 (0.234)	0.061 (0.239)	0.060 (0.237)	0.072 (0.258)	0.073 (0.259)	0.057 (0.233)	0.057 (0.232)	0.063 (0.242)	0.058 (0.233)
African American	0.043 (0.202)	0.041 (0.199)	0.041 (0.198)	0.042 (0.200)	0.009 (0.094)	0.007 (0.085)	0.047 (0.212)	0.044 (0.204)	0.206 (0.404)	0.194 (0.396)	0.080 (0.272)	0.079 (0.270)	0.012 (0.110)	0.012(0.110)	0.004 (0.059)	0.003 (0.056)
Hispanic	0.056 (0.231)	0.052 (0.223)	0.007 (0.085)	0.008 (0.089)	0.001 (0.030)	0.001 (0.034)	0.000 (0.018)	0.000 (0.020)	0.003 (0.054)	0.002 (0.050)	0.018 (0.134)	0.016 (0.127)	0.095 (0.293)	0.095 (0.293)	0.010 (0.098)	0.008 (0.088)
Asian	0.087 (0.282)	0.083 (0.275)	0.006 (0.075)	0.005 (0.072)	0.002 (0.040)	0.001 (0.035)	0.001 (0.032)	0.001 (0.034)	0.002 (0.046)	0.002 (0.044)	0.009 (0.092)	0.008 (0.091)	<11*	0.002 (0.044)	0.006 (0.076)	0.007(0.081)
Native American	0.004 (0.061)	0.001 (0.034)	<11*	0.000 (0.015)	0.001 (0.024)	0.000 (0.016)	0.000 (0.014)	0.000 (0.010)	0.001 (0.033)	0.001 (0.025)	0.000 (0.021)	0.000 (0.016)	0.052 (0.221)	0.031 (0.173)	0.004 (0.065)	0.002 (0.046)
Other race/ethnicity	0.036 (0.187)	0.037 (0.189)	0.008 (0.087)	0.006 (0.080)	0.003 (0.059)	0.003 (0.059)	0.003 (0.058)	0.003 (0.052)	0.004 (0.062)	0.004 (0.063)	0.010 (0.099)	0.009 (0.096)	0.010 (0.102)	0.022 (0.147)	0.010 (0.099)	0.009 (0.094)
disability original reason for Medicare	0.003 (0.055)	0.064 (0.244)	0.005 (0.068)	0.050 (0.218)	0.005 (0.072)	0.048 (0.214)	0.002 (0.040)	0.096 (0.295)	0.003 (0.056)	0.084 (0.277)	0.002 (0.041)	0.057 (0.233)	0.004 (0.063)	0.075 (0.263)	0.005 (0.067)	0.047 (0.211)
have state buy-in Part B coverage	25.428	24.717	8.455 (26.212)	8.141 (25.738)	5.936 (21.930)	6.155 (22.255)	13.757 (32.863)	13.400 (32.448)	18.153 (37.069)	16.691 (35.668)	8.832 (27.154)	8.539 (26.738)	14.499 (33.656)	14.950 (34.011)	4.330 (19.060)	3.927 (18.078)
moved to new home	0.145 (0.352)	0.156 (0.363)	0.105 (0.306)	0.121 (0.326)	0.072 (0.259)	0.082 (0.275)	0.075 (0.263)	0.087 (0.282)	0.086 (0.280)	0.113(0.317)	0.109(0.311)	0.113 (0.317)	0.112 (0.315)	0.106 (0.308)	0.102 (0.303)	0.112 (0.316)
miles to closest provider	1.378 (3.548)	2.185 (4.046)	1.032 (2.009)	1.914 (2.241)	3.661 (5.358)	5.648 (6.382)	2.803 (4.572)	4.339 (5.146)	3.270 (5.864)	4.389 (5.926)	0.776 (1.654)	1.377(1.952)	5.245 (10.311)	7.271 (11.327)	2.040 (5.711)	3.834 (6.303)
PCSA level (N)	337	338	71	71	225	225	144	145	112	112	139	139	61	61	52	54
isolation index - African American	4.925 (7.792)	4.910 (7.785)	6.794 (10.420)	6.794 (10.420)	1.099 (3.605)	1.099 (3.605)	5.872 (9.405)	5.841 (9.380)	35.646 (17.050)	35.646 (17.050)	12.629 (15.832)	12.629 (15.832)	1.444 (1.788)	1.444 (1.788)	0.620 (1.376)	0.608 (1.352)
isolation index - Hispanic	31.153(23.614)	31.080 (23.617)	7.681 (10.848)	7.681 (10.848)	2.380 (3.753)	2.380 (3.753)	1.470 (1.380)	1.468 (1.375)	1.938 (1.676)	1.938 (1.676)	12.147 (14.541)	12.147(14.541)	50.501 (21.295)	50.501 (21.295)	9.292 (9.350)	9.237 (9.205)
isolation index-Asian	6.666 (8.483)	6.649 (8.476)	2.339 (1.512)	2.339 (1.512)	0.677 (0.920)	0.677 (0.920)	0.610 (0.986)	0.608 (0.983)	1.087 (3.093)	1.087 (3.093)	5.302 (5.532)	5.302 (5.532)	0.652 (0.841)	0.652 (0.841)	0.991 (1.133)	0.964 (1.120)
isolation index - Native American	2.257 (5.730)	2.260 (5.722)	0.407 (0.565)	0.407 (0.565)	0.385 (1.073)	0.385 (1.073)	0.390 (0.537)	0.393 (0.535)	1.144(2.791)	1.144 (2.791)	0.226 (0.234)	0.226 (0.234)	13.889 (27.187)	13.889 (27.187)	5.894 (17.633)	5.706 (17.324)
% workers who commute 60+ minutes	10.223 (5.957)	10.207 (5.955)	8.635 (5.996)	8.635 (5.996)	4.869 (2.584)	4.869 (2.584)	9.334 (4.691)	9.382 (4.710)	10.297 (4.436)	10.297 (4.436)	12.977 (5.343)	12.977 (5.343)	9.317 (6.804)	9.317 (6.804)	7.176 (4.150)	7.156 (4.072)
% elderly with no/poor English	28.619 (16.794)	28.671(16.796)	15.077 (9.753)	15.077 (9.753)	7.912 (13.637)	7.912 (13.637)	8.777 (14.937)	8.782 (14.885)	8.398 (10.431)	8.398 (10.431)	24.459 (13.660)	24.459 (13.660)	24.657 (18.552)	24.657 (18.552)	20.343 (22.459)	20.275 (22.039)
proportion county in rural tracts	27.836(34.204)	27.892 (34.169)	24.396 (29.946)	24.396 (29.946)	73.918 (31.226)	73.918 (31.226)	72.384 (29.104)	72.574 (29.093)	54.449 (30.887)	54.449 (30.887)	12.445 (22.899)	12.445 (22.899)	61.932 (35.917)	61.932 (35.917)	49.856 (38.906)	50.094(39.117)
County level (N)	58	58	8	8	99	99	120	120	64	64	21	21	33	33	28	29
% Medicare managed care in 1998	23.743(16.927)	23.743 (16.927)	14.059 (4.158)	14.059 (4.158)	1.760 (4.351)	1.760 (4.351)	2.136 (4.330)	2.136(4.330)	11.961 (11.472)	11.961 (11.472)	14.000 (5.759)	14.000 (5.759)	7.723 (12.256)	7.723 (12.256)	5.431 (5.834)	5.339 (5.750)
% poverty rate	13.247 (4.764)	13.247 (4.764)	6.425 (1.578)	6.425 (1.578)	8.757 (1.990)	8.757 (1.990)	17.526 (6.569)	17.526 (6.569)	20.127 (5.754)	20.127 (5.754)	7.600 (3.387)	7.600 (3.387)	21.091 (5.954)	21.091 (5.954)	11.650 (4.069)	11.576 (4.016)
mammography facilities per thousand elderly	0.896 (0.508)	0.896 (0.508)	0.919 (0.255)	0.919 (0.255)	1.114 (1.207)	1.114 (1.207)	1.138 (1.409)	1.138 (1.409)	0.545 (0.692)	0.545 (0.692)	0.944 (0.384)	0.944 (0.384)	0.617 (0.758)	0.617 (0.758)	1.129 (1.606)	1.090 (1.591)
oncologists per thousand elderly	0.077 (0.069)	0.077 (0.069)	0.098 (0.086)	0.098 (0.086)	0.029 (0.092)	0.029 (0.092)	0.027 (0.087)	0.027 (0.087)	0.029 (0.068)	0.029 (0.068)	0.085 (0.067)	0.085 (0.067)	0.019 (0.051)	0.019 (0.051)	0.020 (0.053)	0.020 (0.052)

^*< 11: Data suppressed due to confidentiality agreements, because fewer than 11 individuals are in this category.