Higher primary care physician to population ratios are associated especially with lower stroke mortality and postneonatal mortality. Income inequality and primary care physician to population ratios are associated with each other, showing that social policies and health policies in individual states go together; the better is one, the better the other.

Source: Shi L, Starfield B, Kennedy BP, Kawachi I. Income inequality, primary care, and health indicators. J Fam Pract 1999; 48(4):275-284.