Table 1.
Study Population Characteristics by Vaccination Status Prior to Preprocedural Molecular COVID-19 Screening
| Screenings With at Least 1 Prior Vaccination (n = 3006, 6.2%) | Screenings With No Prior Vaccination (n = 45 327, 93.8%) | P a | |
|---|---|---|---|
| Mayo Clinic site, n (%) | <.001 | ||
| Arizona campus | 1467 (48.8) | 15 662 (34.6) | |
| Rochester campus | 1005 (33.4) | 15 450 (31.4) | |
| Mayo Clinic Health System | 534 (17.8) | 14 215 (31.4) | |
| Age, mean (SD), years | 46.9 (14.9) | 55.2(18.4) | <.001 |
| Sex, n (%) | <.001 | ||
| Male | 1057 (35.2) | 21 912 (48.3) | |
| Female | 1949 (64.8) | 23 415 (51.7) | |
| Race, n (%) | <.001 | ||
| White, non-Hispanic | 2401 (79.9) | 39 145 (86.4) | |
| African or African-American | 52 (1.7) | 1014 (2.2) | |
| Asian or Asian-American | 184 (6.1) | 1041 (2.3) | |
| Hispanic of any race | 180 (6.0) | 2238 (4.9) | |
| Other/unknown | 189 (6.3) | 1889 (4.2) | |
| Patient resides in local HRR, n (%) | 2537 (84.4) | 28 480 (62.8) | <.001 |
| State of residence, n (%) | <.001 | ||
| Minnesota | 1227 (40.8) | 18 170 (40.3) | |
| Wisconsin | 299 (10.0) | 5988 (13.3) | |
| Iowa | 20 (0.7) | 1867 (4.1) | |
| Arizona | 1405 (46.7) | 13 824 (30.6) | |
| Other | 55 (1.8) | 5478 (12.1) | |
| Timing (days to screening), n (%) | … | ||
| 0–10 days after first dose | 937 (31.2) | … | |
| >10 days after first dose, before second dose | 1362 (45.3) | … | |
| >0 days after second dose | 707 (23.5) | … | |
| Timing, median (IQR), days to screening | … | ||
| Days after first dose | 16 (7, 27) | … | |
| Days after second dose | 9 (5, 15) | … | |
| Number of doses, n (%) | |||
| 1 | 2299 (76.5) | … | |
| 2 | 707 (23.5) | … | |
| Manufacturer, n (%) | … | ||
| Pfizer | 2826 (94.0) | … | |
| Moderna | 178 (5.9) | … | |
| Missing/unknown/external | 2 (<0.1) | … |
Abbreviations: COVID-19, coronavirus disease 2019; HRR, Health Referral Region; IQR, interquartile range.
a t Test for continuous variables, chi-square for categorical variables, and Bonferroni-corrected for multiplicity.