Widening Socioeconomic Disparities in US Childhood Mortality, 1969 2000 -- Singh and Kogan 97 (9): 1658 -- American Journal of Public Health: "Results. Despite marked declines in child mortality, socioeconomic gradients (relative mortality risks) in overall child mortality increased substantially during the study period. During 1969–1971, children in the most deprived socioeconomic quintile had 52%, 13%, 69%, and 76% higher risks of all-cause, birth defect, unintentional injury, and homicide mortality, respectively, than did children in the least deprived socioeconomic quintile. The corresponding relative risks increased to 86%, 44%, 177%, 159%, respectively from 1998–2000.
Conclusions. Dramatic reductions in mortality among children in all socioeconomic quintiles represent a major public health success. However, children in higher socioeconomic quintiles experienced much larger declines in overall, injury, and natural-cause mortality than did those in more deprived socioeconomic quintiles, which contributed to the widening socioeconomic gap in mortality. Widening disparities in child mortality may reflect increasing polarization among deprivation quintiles in material and social conditions."