TABLE 2—

Analysis of Variance Results by Outcome Measure: US Counties, 1990 (n = 3075)

	All-Cause Mortality per 100 000 Population		Heart Disease Mortality per 100 000 Population		Cancer Mortality per 100 000 Population
Predictora	Mean	SD	Mean	SD	Mean	SD
Gini
> 75th percentile	1084.60****	263.59	491.19****	152.83	228.86****	61.78
50th–75th percentile	1057.39****	238.53	479.5****	135.58	234.04****	56.38
25th–50th percentile	1003.67****	249.29	459.99****	145.92	224.63****	57.93
≤ 25th percentile	856.24****	244.44	384.76****	135.67	194.59****	59.66
Primary Care
< 75th percentile	1030.90****	262.53	471.37****	148.85	225.51****	61.11
≥ 75th percentile	953.25****	253.35	421.53****	138.37	213.63****	58.08
Percent Black
≥ Median	1030.91****	277.79	471.26****	161.02	226.75****	66.87
< Median	992.24****	244.76	446.67****	132.47	218.37****	53.30
Percent unemployed
≥ Median	1037.62****	223.00	470.85****	128.94	227.58****	55.19
< Median	984.74****	295.05	446.68****	164.14	217.39****	65.25
Average income
< 75th percentile	1040.37****	246.05	475.19****	140.77	226.02****	57.21
≥ 75th percentile	925.15****	289.54	410.24****	157.64	212.14****	68.66
Percent high school education
≥ Median	936.40****	269.73	421.45****	150.37	212.14****	62.23
< Median	1087.07****	231.45	496.61****	135.23	233.01****	57.00

^aOne-way analysis of variance was performed to find the overall difference among 4 groups for Gini. The Scheffe multiple comparison procedure was used to further compare paired differences between each of the 4 groups after rejection of the overall hypothesis that at least 1 group is different from the others. The results from Scheffe comparison procedure indicate that each mortality outcome for Gini ≤ 25th percentile group was significantly lower than that of the other Gini groups (P < .05). T-tests were used to compare variables with only 2 groups.

* P < .05; **P < .01; ***P < .001; ****P < .0001.