To determine the states with the longest and shortest life expectancy, 24/7 Tempo reviewed life expectancy at birth for 2010-2015, the latest time period for which data is available. Figures were obtained from the National Association for Public Health Statistics and Information Systems (NAPHSIS) and the Robert Wood Johnson Foundation (RWJF) and were updated in March 2020.
Figures for life expectancy at birth in 1980 came from the Institute for Health Metrics and Evaluation. Data on smoking, poor health, and obesity rates came from the County Health Rankings and Roadmaps program, a collaboration between RWJF and the University of Wisconsin Population Health Institute.
Data on income and poverty rates came from the U.S. Census Bureau and is of 2019.