EXHIBIT 3.
Sociodemographic characteristics of Medicare beneficiaries who received an mRNA vaccine first dose (January 1-July 31, 2021) or booster dose (August 1, 2021-April 30, 2022)
| First dose (N = 14,448,485) |
Booster dose (N = 19,151,132) |
|||
|---|---|---|---|---|
| Characteristics | Numbera | Percent | Numbera | Percent |
| Vaccine type | ||||
| Pfizer-BioNTech | 7,880,845 | 54.54 | 10,501,525 | 54.84 |
| Moderna | 6,567,640 | 45.46 | 8,649,607 | 45.16 |
| Age, mean years (SD) | 74.43 (9.07) | —b | 74.56 (7.98) | —b |
| Age, years | ||||
| Younger than 66 | 1,531,155 | 10.60 | 1,483,778 | 7.75 |
| 66–69 | 3,198,336 | 22.14 | 4,450,974 | 23.24 |
| 70–74 | 3,644,772 | 25.23 | 5,236,980 | 27.35 |
| 75–79 | 2,524,401 | 17.47 | 3,633,251 | 18.97 |
| 80–84 | 1,694,982 | 11.73 | 2,268,789 | 11.85 |
| 85–89 | 1,073,564 | 7.43 | 1,278,120 | 6.67 |
| 90 or older | 781,275 | 5.41 | 799,240 | 4.17 |
| Female | 8,538,720 | 59.10 | 10,916,913 | 57.00 |
| Race and ethnicity | ||||
| White | 11,197,335 | 77.50 | 14,884,996 | 77.72 |
| Black | 1,286,454 | 8.90 | 1,552,814 | 8.11 |
| Other | 142,618 | 0.99 | 219,445 | 1.15 |
| Asian | 580,517 | 3.99 | 804,158 | 4.26 |
| Hispanic | 883,963 | 6.12 | 1,130,728 | 5.90 |
| Native American | 27,804 | 0.19 | 26,278 | 0.14 |
| Unknown or missing | 326,152 | 2.26 | 509,249 | 2.66 |
| US geographic region | ||||
| Northeast | 3,075,797 | 21.29 | 4,167,652 | 21.76 |
| Midwest | 3,620,658 | 25.06 | 4,178,690 | 21.82 |
| South | 4,938,507 | 34.18 | 7,105,985 | 37.10 |
| West | 2,813,523 | 19.47 | 3,698,805 | 19.31 |
| Rural-urban classificationc | ||||
| Large central metro | 3,985,808 | 27.59 | 5,438,184 | 28.40 |
| Large fringe metro | 4,113,249 | 28.47 | 5,718,217 | 29.86 |
| Medium metro | 3,318,682 | 22.97 | 4,340,309 | 22.66 |
| Small metro | 1,335,084 | 9.24 | 1,669,248 | 8.72 |
| Micropolitan | 1,067,479 | 7.39 | 1,288,937 | 6.73 |
| Noncore | 628,183 | 4.35 | 696,237 | 3.64 |
| Medicare enrollment | ||||
| Part A only | 311,814 | 2.16 | 832,046 | 4.34 |
| Fee-for-service | 7,686,016 | 53.20 | 10,154,465 | 53.02 |
| Medicare Advantage | 6,379,591 | 44.15 | 8,094,032 | 42.26 |
| Other | 71,064 | 0.49 | 70,589 | 0.37 |
| Full duald | 1,705,030 | 11.80 | 1,446,884 | 7.56 |
SOURCE Authors’ analysis of customer data from CVS Health and Walgreens linked to the 100 percent Medicare Enrollment File.
a
All data reported are number and percent except for “Age, mean years (SD).”
b
Not applicable.
c
Classifications of the National Center for Health Statistics.
d
Enrolled in both Medicare and Medicaid.