TABLE 2.

Inferential statistics. Elevation = land elevation category. n = number of counties. Mean = heart disease death rate mean. SD = standard deviation. CI = confidence interval. p = p value. ES = effect size.

Race	Elevation	n	Mean	SD	95% CI	Mean difference	P	ES
Black	Low	576	245.2	73.7	239.1 to 251.2
Black	High	51	190.2	89.9	164.9 to 215.5	55.0	0.0001	0.73
White	Low	717	210.2	42.3	207.1 to 213.3
White	High	176	157.6	28.7	153.3 to 161.8	52.6	< 0.0001	1.32