Table 1.

Characteristics of the Sample

Characteristic
Population in FIPS code (n = 58), median (range)	175,353 (1,190–9,937,739)
EDs per 100,000 population, median (range)	0.73 (0–11)
Median household income in FIPS code, n (%)
$20,001–$30,000	4 (6.9)
$30,001–$40,000	25 (43.1)
$40,001–$50,000	14 (24.14)
$50,001–$60,000	10 (17.24)
$60,001–$70,000	3 (5.17)
$70,001–$80,000	2 (3.45)
Percentage of population in FIPS code without health insurance, median (range)
Low, <16.3%	20 (9.8–16.3)
Medium, 16.3%–19.3%	19 (16.5–19.3)
High, >19.3%	19 (19.8–32.1)
Percentage of adults in FIPS code >25 years with less than 9 years of education, median (range)
Low, <5.2%	20 (1.8–5.2)
Medium, 5.2%–10.5%	20 (5.9–10.5)
High, >10.5%	18 (10.6–23.8)

Low = lower one-third of sample; middle = middle one-third of sample; high = upper one-third of sample.

FIPS = Federal Information Processing Standard.