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1. What is the life expectancy at birth for the total U.S. population in
2020, and how does it compare to 2019?
Answer: The life expectancy at birth for the total U.S. population in 2020
was 77.0 years, a decrease of 1.8 years from 78.8 years in 2019.
Rationale: This is a factual question based on the data from the National
Vital Statistics System (NVSS) [1].
2. What are the three leading causes of death in the U.S. in 2020, and how
did they change from 2019?
Answer: The three leading causes of death in the U.S. in 2020 were heart
disease, cancer, and COVID-19. Heart disease and cancer remained the
top two leading causes, but COVID-19 became the third leading cause of
death in 2020, replacing unintentional injuries.
Rationale: This is a factual question based on the data from the NVSS [1].
3. What is the age-adjusted death rate for the total population in 2020, and
how does it vary by race-ethnicity-sex groups?
Answer: The age-adjusted death rate for the total population in 2020 was
835.4 per 100,000 standard population, an increase of 16.8% from 715.2
in 2019. Age-adjusted death rates increased in 2020 from 2019 for all
race-ethnicity-sex groups, with the highest increase for Hispanic males
(42.7%), followed by Hispanic females (32.4%), non-Hispanic Black
males (28.0%), non-Hispanic Black females (24.9%), non-Hispanic White
males (13.4%), and non-Hispanic White females (12.1%).
Rationale: This is a factual question based on the data from the NVSS [1]
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