Chi-square tests indicated that local EMS agency response rates differed (at the p < 0.05 level) by county size; medium-sized counties in California are under-represented in the survey results.
The mean county size in acres was 670,572, and county size ranged from 15,796 acres in Rhode Island to 11,916,244 acres in Arizona.
We estimated associations by county groupings based on four urbanicity classifications (representative of county size and urban proximity) and county health.
The size of the largest graduated dot symbol was determined using the average county size so that overlapping of dots and county boundaries were minimized.
Indeed, no pattern of deviation between the two population data sources is discernable by county size, age distribution, or county urban/rural status.
For example, Urban Influence Codes capture economic opportunities of counties by taking into account county size and access to larger economies (USDA 2012a), and Rural-Urban Commuting Areas delineate sub-county components by classifying U.S. census tracts using measures of population density, urbanization, and daily commuting (USDA 2013b).
Multiple causality is likely, and attempts to apply any single explanation to a county-size area (and sometimes to a pedon) are not likely to be successful.
The sampling probabilities in each of the counties were different in order to obtain county comparable sizes of the samples.
From 1997 to 2007, Elunchun County (population size, 292,097) and Molidawahaner County (population size, 294,501), located in the east of the Da-Xing-An Da-Xing-An Da-Xing-An Mountains incidences of HFreportedina where the annual average incidence reachighest69 and 61.12 per 100,000, respectincidences
