Table 1.
Characteristics of Participants Included in Analyses
| Characteristic | Participants, No. (%) | |
|---|---|---|
| Included in DPSO (n = 146) |
Included in DPE (n = 96) |
|
| Symptomatic | 146 (100.0) | 85 (88.5) |
| No. of previous infections | ||
| 0 | 129 (88.4) | 85 (88.5) |
| 1 | 14 (9.6) | 9 (9.4) |
| ≥2 | 3 (2.1) | 2 (2.1) |
| Age | ||
| <18 y | 22 (15.1) | 17 (17.7) |
| 18–44 y | 91 (62.3) | 52 (54.2) |
| 45–64 y | 29 (19.9) | 24 (25.0) |
| ≥65 y | 4 (2.7) | 3 (3.1) |
| Sex | ||
| Male | 47 (32.2) | 37 (38.5) |
| Female | 94 (64.4) | 58 (60.4) |
| Missing | 5 (3.4) | 1 (1.0) |
| Race | ||
| White | 116 (79.5) | 81 (84.4) |
| Asian | 7 (4.8) | 3 (3.1) |
| Black/African-American | 8 (5.5) | 4 (4.2) |
| Multiracial | 8 (5.5) | 3 (3.1) |
| Other | 4 (2.8) | 5 (5.2) |
| Missing | 3 (2.1) | 0 (0.0) |
| Hispanic | 18 (12.3) | 6 (6.2) |
| Educational level | ||
| Bachelor's degree or higher | 65 (44.5) | 47 (49.0) |
| Some college | 31 (21.2) | 18 (18.8) |
| High school graduate | 23 (15.8) | 15 (15.6) |
| Did not finish high school | 22 (15.1) | 13 (13.5) |
| Don’t know | 0 (0.0) | 3 (3.1) |
| Missing | 5 (3.4) | 0 (0.0) |
| Vaccination status | ||
| Unvaccinated | 47 (32.2) | 32 (33.3) |
| 1 vaccine dose | 6 (4.1) | 3 (3.1) |
| ≥2 vaccine doses | 93 (63.7) | 61 (63.5) |
| SARS-CoV-2 variant | ||
| Delta | 34 (23.3) | 15 (15.6) |
| Omicron | 101 (69.2) | 75 (78.1) |
| Unknown | 11 (7.5) | 6 (6.2) |
Abbreviation: DPE, day past exposure; DPSO, day past symptom onset; SARS-CoV-2, severe acute respiratory syndrome coronavirus 2.