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Table 14 Correlations between sociodemographic variables, RUCC-stratified EQI and overall EQI for 3141 U.S. counties (2000–2005)

From: Construction of an environmental quality index for public health research

  Overall EQI Metro-urban EQI Non-metro EQI Less urban EQI Thin pop / rural EQI
Female (%) 0.199 0.140 0.103 0.141 0.213
Male (%) −0.199 −0.140 −0.103 −0.141 −0.213
Under 5 (%) 0.047 0.024 −0.316 −0.304 −0.211
Over 65 (%) −0.209 −0.173 0.106 0.222 0.238
White non-Hispanic (%) 0.262 0.191 0.600 0.535 0.422
Black non-Hispanic (%) −0.167 −0.267 −0.412 −0.385 −0.189