In “Social Capital, Income Inequality, and Mortality” (1997) by Ichiro Kawachi and other researchers assert that income inequality are associated with mortality rates and reduction in social cohesion. The data was analyzed from a cross-sectional ecologic study that was conducted by the National Opinion Research Center to estimate state variations in group membership and levels of social trust for English-speaking individuals who are 18 years old and older in 39 states. Post stratification was based on race, the distribution of age, and education. The Housing Summary Tape File 3A and 1990 US Census were used to measure household size, income, and poverty. In addition, the levels of social trust was assessed from two questions: “Do you think
