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]