Table 2.
BCG status and COVID-19, descriptive statistics and logistic regression.
| Cases (%) n = 920 |
Controls (%) n = 2123 |
Crude odds ratio (95% CI) |
Adjusted odds ratio (95% CI) a |
|
|---|---|---|---|---|
| BCG received | ||||
| Never | 424 (46.1) | 996 (46.9) | 1.00 | 1.00 |
| Ever | 496 (53.9) | 1127 (53.1) | 1.03 (0.89–1.21) | 1.01 (0.84–1.21) |
| Number of BCG doses | ||||
| 0 | 424 (46.1) | 996 (46.9) | 1.00 | 1.00 |
| 1 | 382 (41.5) | 892 (42.0) | 1.01 (0.85–1.19) | 0.97 (0.80–1.18) |
| ≥2 | 114 (12.4) | 235 (11.1) | 1.14 (0.88–1.46) | 1.17 (0.86–1.57) |
| Age at first BCG, years | ||||
| Unvaccinated | 424 (46.1) | 996 (46.9) | 1.00 | 1.00 |
| 0–1 | 340 (37.0) | 726 (34.2) | 1.10 (0.93–1.31) | 1.04 (0.85–1.27) |
| 2–9 | 119 (12.9) | 313 (14.7) | 0.89 (0.70–1.13) | 0.95 (0.71–1.27) |
| ≥10 | 37 (4.0) | 88 (4.1) | 0.99 (0.65–1.46) | 0.80 (0.48–1.29) |
Abbreviations: BCG: Bacillus Calmette-Guérin; CI: confidence interval; COVID-19: coronavirus disease 2019.
a
Adjusted for sex, age, recruitment hospital, material deprivation, occupation (healthcare worker vs other), and residence area (rural vs urban).