Table 4

Factors influencing county-level hospital ACS hospitalization rates among estimated uninsured populations, eight states, 2002

Children (ages 0 – 17)

249 counties

Working age adults

(ages 18 – 64)

571 counties


Model Coefficient

SE

p-value

Model Coefficient

SE

p-value


Facilities (ref: neither)


CHC Only

-0.0778

0.2048

0.7042

-0.0089

0.0546

0.8702


RHC Only

-0.1159

0.1606

0.4706

-0.0315

0.0321

0.3266


RHC&CHC

0.4973

0.2125

0.0193

0.0702

0.0579

0.2255


Resources in county:


MD/DO per 10,000 population

-0.0002

0.0062

0.9760

0.0001

0.0018

0.9340


Beds per 1,000 population

0.0106

0.0265

0.6878

0.0122

0.0045

0.0070


Number of hospitals with Emergency Dept.

0.0130

0.0384

0.7355

0.0227

0.0094

0.0154


HMO penetration rate

-0.0088

0.0045

0.0518

-0.0014

0.0013

0.2761


ED visits per 100

0.0040

0.0028

0.1605

0.0036

0.0005

< .0001


Non-metropolitan county (v metro)

-0.2756

0.1597

0.0843

-0.0549

0.0405

0.1761


Characteristics of county population


Percent population that is:


African American

-0.0043

0.0048

0.3724

0.0019

0.0011

0.0840


Hispanic white

-0.0456

0.0280

0.1036

-0.0101

0.0025

< .0001


Asian

0.0710

0.0418

0.0898

-0.0096

0.0161

0.5527


American Indian/Native American

0.2141

0.0390

< .0001

-0.0056

0.0045

0.2193


Population change, 1990 – 2000, %

-0.0216

0.0072

0.0025

-0.0017

0.0014

0.2269


Percent with less than high school education

0.0073

0.0104

0.4787

0.0401

0.0023

< .0001


Population per square mile (/100)

0.0043

0.0013

0.0011

-0.0002

0.0006

0.6908


Percent unemployed (/10)

-0.7131

0.2180

0.0011

0.0884

0.0410

0.0310


Percent uninsured*

-0.0147

0.0139

0.2902

0.0006

0.0052

0.9095


Median household income (thousands)

-0.0241

0.0139

0.0819

-0.0011

0.0013

0.4113


Death rates (×10,000) for:


Cardiovascular disease

0.0031

0.0093

0.7412

0.0124

0.0023

< .0001


Chronic obstructive pulmonary disease

0.0890

0.0444

0.0447

0.0090

0.0090

0.3194


Diabetes

-0.1353

0.0584

0.0206

0.0194

0.0126

0.1226


Liver disease

-0.3647

0.1294

0.0048

0.0620

0.0230

0.0070


* Estimated percent uninsured among children (ages 0–17) in the model for children, among working age adults (ages 18–64) for the model for adults.

Probst et al. BMC Health Services Research 2009 9:134   doi:10.1186/1472-6963-9-134

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