TABLE 1—
A Study of SARS-COV-2 Infection, Hospitalizations, and Mortality in Vaccinated and Infected Individuals: Demographic and Clinical Characteristics of the Matched Cohorts on the Index Date, Indiana, 2020‒2022
| Vaccinated (n = 267 847) | Unvaccinated With Previous Infection (n = 267 847) | P | |
| Race, no. (%) | > .99 | ||
| American Indian or Alaska Native | 53 (0.0) | 53 (0.0) | |
| Asian/Pacific Islander | 1 684 (0.6) | 1 684 (0.6) | |
| Black or African American | 21 044 (7.9) | 21 044 (7.9) | |
| Multiracial | 43 (0.0) | 43 (0.0) | |
| Other/unknown | 9 630 (3.6) | 9 630 (3.6) | |
| White | 235 393 (87.9) | 235 393 (87.9) | |
| Ethnicity, no. (%) | < .001 | ||
| Hispanic or Latino | 13 224 (4.9) | 16 733 (6.2) | |
| Not Hispanic or Latino | 220 367 (82.3) | 235 639 (88.0) | |
| Other/unknown | 34 256 (12.8) | 15 475 (5.8) | |
| Gender, no. (%) | > .99 | ||
| Female | 155 759 (58.2) | 155 759 (58.2) | |
| Male | 112 085 (41.8) | 112 085 (41.8) | |
| Unknown | 3 (0.0) | 3 (0.0) | |
| Age, y | > .99 | ||
| Mean (SD) | 38.9 (16.4) | 38.9 (16.4) | .98 |
| Median (IQR) | 37 (26‒51) | 37 (26‒51) | |
| 12–19, no. (%) | 31 454 (11.7) | 31 454 (11.7) | |
| 20–39, no. (%) | 115 511 (43.1) | 115 511 (43.1) | |
| 40–59, no. (%) | 87 199 (32.5) | 87 199 (32.5) | |
| 60–79, no. (%) | 31 249 (11.7) | 31 249 (11.7) | |
| 80–110, no. (%) | 2 434 (0.9) | 2 434 (0.9) | |
| CDC “certain” risk scorea | |||
| Mean (SD) | 0 (0.2) | 0 (0.2) | > .99 |
| Median (IQR) | 0 (0‒0) | 0 (0‒0) | |
| CDC “possible” risk scoreb | |||
| Mean (SD) | 0.1 (0.3) | 0.1 (0.3) | > .99 |
| Median (IQR) | 0 (0‒0) | 0 (0‒0) | |
| CDC sum risk scorec | |||
| Mean (SD) | 0.1 (0.4) | 0.1 (0.4) | > .99 |
| Median (IQR) | 0 (0‒0) | 0 (0‒0) |
Note. CDC = Centers for Disease Control and Prevention; IQR = interquartile range; SARS-CoV-2 = severe acute respiratory syndrome coronavirus 2.
CDC “certain” risk score conditions: cancer, chronic kidney disease, chronic obstructive pulmonary disease, heart conditions, sickle cell disease, solid organ transplant recipient, type 1 diabetes mellitus, type 2 diabetes mellitus.
CDC “possible” risk score conditions: asthma, cerebrovascular disease, hypertension, immunocompromised state, liver disease, neurologic conditions, obesity, other respiratory diseases, thalassemia.
CDC sum risk score: a sum of how many “certain” and “possible” conditions a person was flagged for.