Table 1.
Characteristics of Study Population, by Model 1 and 2.
| Model 1 | Model 2 | |||
|---|---|---|---|---|
| Characteristics | Previously Infected (n = 16 215) |
Vaccinated Individuals (n = 16 215) |
Previously Infected (n = 46 035) |
Vaccinated Individuals (n = 46 035) |
| Age, years, mean (SD) | 36.1 (13.9) | 36.1 (13.9) | 36.1 (14.7) | 36.1 (14.7) |
| Age group, no. (%) | ||||
| 16 to 39 yr | 9889 (61.0) | 9889 (61.0) | 28 157 (61.2) | 28 157 (61.2) |
| 40 to 59 yr | 5536 (34.1) | 5536 (34.1) | 14 973 (32.5) | 14 973 (32.5) |
| ≥60 yr | 790 (4.9) | 790 (4.9) | 2905 (6.3) | 2905 (6.3) |
| Sex, no. (%) | ||||
| Female | 7428 (45.8) | 7428 (45.8) | 22 661 (49.2) | 22 661 (49.2) |
| Male | 8,787 (54.2) | 8787 (54.2) | 23 374 (50.8) | 23 374 (50.8) |
| SES, mean (SD) | 5.5 (1.9) | 5.5 (1.9) | 5.3 (1.9) | 5.3 (1.9) |
| Comorbidities, no. (%) | ||||
| Hypertension | 1276 (7.9) | 1569 (9.7) | 4009 (8.7) | 4301 (9.3) |
| CVD | 551 (3.4) | 647 (4.0) | 1,875 (4.1) | 1830 (4.0) |
| DM | 635 (3.9) | 877 (5.4) | 2207 (4.8) | 2300 (5.0) |
| Immunocompromised | 164 (1.0) | 420 (2.6) | 527 (1.1) | 849 (1.8) |
| Obesity (BMI ≥30) | 3076 (19.0) | 3073 (19.0) | 9117 (19.8) | 8610 (18.7) |
| CKD | 196 (1.2) | 271 (1.7) | 659 (1.4) | 814 (1.8) |
| COPD | 65 (0.4) | 97 (0.6) | 218 (0.5) | 292 (0.6) |
| Cancer | 324 (2.0) | 636 (3.9) | 1044 (2.3) | 1364 (3.0) |
Abbreviations: BMI, body mass index; CKD, chronic kidney disease; COPD, chronic obstructive pulmonary disease; CVD, cardiovascular diseases; DM, diabetes mellitus; SD, standard deviation; SES, socioeconomic status on a scale from 1 (lowest) to 10.