Hispanic-White Differences in Lifespan Variability in the United States

Area of Science:

• Demography
• Public Health
• Sociology

Background:

• The "Hispanic paradox" describes the unexpected health and longevity advantages of Hispanic populations compared to non-Hispanic whites.
• While higher life expectancy in Hispanics is known, differences in lifespan variability remain understudied.
• Lifespan variability reflects uncertainty in an individual's length of life.

Purpose of the Study:

• To investigate differences in lifespan variability between Hispanics and non-Hispanic whites in the United States.
• To identify the causes contributing to disparities in lifespan variability.
• To examine the role of cause-specific mortality in lifespan variability differences.

Main Methods:

• Utilized 2010 U.S. National Vital Statistics System data.
• Calculated lifespan variance at ages 10+ for Hispanic and non-Hispanic white populations.
• Decomposed variance differences into cause-specific spread, allocation, and timing effects.

Main Results:

• Hispanics exhibit 7% lower lifespan variability than non-Hispanic whites, with a larger gap observed in women.
• Differences in cause-specific incidence (allocation effects) accounted for nearly two-thirds of the variability difference, driven by higher white mortality from suicide, accidental poisoning, and lung cancer.
• Greater age dispersion in mortality from heart disease and other causes among whites contributed to the remaining variance difference.

Conclusions:

• The Hispanic paradox extends to lifespan variability, not just life expectancy.
• Reducing U.S. lifespan variability and increasing life expectancy, particularly for whites, requires targeting premature mortality causes like suicide, poisoning, and homicide.
• Understanding Hispanic-white lifespan variability differences deepens insights into the Hispanic paradox.