Table 1.
Baseline Characteristics of 51 017 Employees of Cleveland Clinic in Ohio
| Characteristic | Employees, No. (%)a |
|---|---|
| Age in years, mean (SD) | 42.3 (13.4) |
| Sex | |
| Female | 38 052 (74.6) |
| Male | 12 965 (25.4) |
| Location | |
| Cleveland Clinic Main Campus | 20 495 (40.2) |
| Cleveland area regional hospitals | 12 039 (23.6) |
| Ambulatory centers | 8865 (17.4) |
| Cleveland Clinic Akron | 4301 (8.4) |
| Administrative centers | 4141 (8.1) |
| Cleveland Clinic Medina | 1176 (2.3) |
| Hire cohort | |
| Prepandemic | 34 509 (67.6) |
| Pandemic | 16 508 (32.4) |
| Human resources job classification | |
| Clinical | 25 795 (50.6) |
| Nonclinical | 25 222 (49.4) |
| Pandemic phase when most recent infection occurred | |
| Not previously infected | 30 331 (59.4) |
| Pre-Omicron | 6969 (13.7) |
| Omicron | 13 717 (26.9) |
| Time since most recent infection, mean (SD), d | 287 (220) |
| No. of prior vaccine doses | |
| 0 | 5953 (11.7) |
| 1 | 2514 (4.9) |
| 2 | 14 985 (29.4) |
| 3 | 23 607 (46.3) |
| 4 | 3850 (7.5) |
| 5 | 91 (<1) |
| 6 | 17 (<1) |
| Time since most recent vaccine, mean (SD), 3 | 319 (135) |
| Time since proximate SARS-CoV-2 exposure, mean (SD)b | 263 (142) |
Abbreviations: SARS-Cov-2, severe acute respiratory syndrome; SD, standard deviation.
a
Data represented no. (%) of employees unless otherwise indicated.
b
Exposure by infection or vaccination.