Social Isolation and Population Density: Racial and Ethnic Differences Among Older Adults

This study uses secondary data analysis to assess the relationship between social isolation (SI) and population density in the US, as well as any moderating influence that race/ethnicity may have on that relationship. A recent consensus on the measure of SI is that it focuses on the objective absence of social connections, whereas loneliness refers to subjective assessments of one's social connections. Therefore, while the original study measured both objective and subjective SI may be innovative, it may also be overly ambitious. SI puts older people at risk for health problems, including an increased chance of dying. The AARP Foundation gathered the initial convenience sample, which included 8149 senior citizens. The study determined population density using self-reported zip codes, measured as persons per square mile, and divided the results into tertiles. Linear mixed models were used to investigate the moderating role of race/ethnicity between population density and SI. The findings revealed that greater population density was associated with less SI for individuals residing in zip codes with a higher percentage of the same race/ethnicity, but more SI for those in zip codes with a lower percentage of the same race/ethnicity. These results suggest that race/ethnicity should be considered in future studies or when developing policies and interventions to address SI among older adults in high-population-density areas. For example, when policymakers aim to address SI in a community, they may want to collect data based on zip codes and create targeted interventions for specific racial/ethnic groups within those zip code areas.