This article examines the extent to which caries prevalence and untreated caries vary in children by ethnicity and household income level. Data from the Third National Health and Nutrition Examination Survey, 1988-1994, for 10,332 children 2 to 18 years of age indicate that lower-income children and Mexican-American and African-American children are more likely to have a higher prevalence of ca...

‎In this article we discuss examples of fractal $omega$-operads‎. ‎Thus we show that there is an $omega$-operadic approach to explain existence of‎ ‎the globular set of globular setsfootnote{Globular sets are also called $omega$-graphs by the French School.}‎, ‎the reflexive globular set of reflexive globular sets‎, ‎the $omega$-magma of $omega$-magmas‎, ‎and also the reflexive $omega$-magma ...

A number of studies have found that mortality rates are positively correlated with income inequality across the cities and states of the US. We argue that this correlation is confounded by the effects of racial composition. Across states and Metropolitan Statistical Areas (MSAs), the fraction of the population that is black is positively correlated with average white incomes, and negatively cor...

Using contemporary population data from Taiwan, we examine the relationships between parental age difference, educationally assortative mating, income and offspring count. Controlling for women's reproductive value (measured by age at first birth), we find that an older husband is associated with fewer offspring, whereas a husband with similar or higher education is associated with more offspri...

in the United States. There are large income-related gaps in all three cognitive measures (literacy, mathematics, and language test score); those in the higher income quintiles have higher scores compared to those in lower income quintiles. Although not as pronounced, gaps in behavioral dimensions of school readiness are also present, with incidence of conduct problems and hyperactivity decreas...

According to a standard argument, higher income inequality fosters redistributive activities of the government in favor of the median income earner. This paper shows that if redistribution is achieved by a public provision of goods and services rather than by transfers, higher income inequality may imply a smaller size of the government in majority voting equilibrium. In addition to a static vo...

U.S. metropolitan neighborhoods have become increasingly segregated by income over the past thirty years. The metropolitan areas with the largest rises in income segregation include a number of distressed cities in industrial decline, as well as a subset of rapidly growing metropolitan areas. I propose a simple model based on the notion that rising income inequality creates market pressure (or ...

BACKGROUND Low income appears to be associated with a higher prevalence of diabetes and diabetes related complications, however, little is known about how income influences access to diabetes care. The objective of the present study was to determine whether income is associated with referral to a diabetes centre within a universal health care system. METHODS Data on referral for diabetes care...

[Purpose] This paper attempted to determine the relationship between physical activity of men from Wrocław and their discretionary income. [Subjects and Methods] The subjects were 1,601 male survey respondents aged from 18 to 65 years old. The International Physical Activity Questionnaire was used for the assessment of physical activity. [Results] Among respondents, low intensity physical activ...