The overall age-adjusted mortality rate for 2020 was 828.7 deaths per 100,000 of population. This rate was 15.9% greater than the 2019 overall age-adjusted mortality rate. This high level of mortality has not been experienced in the U.S. since 2003.
If deaths coded as COVID (COVID deaths)3 were excluded, the overall age-adjusted 2020 mortality rate would have been 737.2 per 100,000 or 3.1% higher than the 2019 rate. This increase excluding COVID deaths is also noteworthy because it reverses the two previous calendar years of decreasing mortality; however, some or all of this may be due to the misclassification of CODs as discussed in Section 6.
2020 mortality rates increased in both sexes, with the male rates increasing more than the female rates. The differences in the increases between males and females were about 3% when all causes of death (CODs) are included and about 1% when COVID deaths are excluded.
The slope of the 2020 COVID mortality curve by age group is not as steep as the slope of the non-COVID deaths, indicating that COVID impacts younger ages more evenly across age groups that all other non-COVID CODs combined.
In the review of the 2020 mortality rates by age group, it is interesting to see that the highest percentage increases were in the younger adult ages, not at the very old ages. When COVID deaths were removed, ages 15-44 saw the largest increases in mortality rates.
Author(s): Cynthia MacDonald, FSA, MAAA
Publication Date: 20 May 2021
Publication Site: Society of Actuaries