TABLE A3.
Cohort flow chart
| Hospitalization | ICU admission/mechanical ventilation | |||
|---|---|---|---|---|
| Step | Description | N | Description | N |
| 1 | All patients in data | 6,421,125 | All patients in data | 6,421,125 |
| 2 | Patients in an integrated delivery network | 5,704,773 | Patients in an Integrated Delivery Network | 5,704,773 |
| 3 | Patients with complete demographic data | 5,694,848 | Patients with complete demographic data | 5,694,848 |
| 4 | Male patients | 2,481,999 | Male patients | 2,481,999 |
| 5 | Patients with a COVID‐19 positive lab test or diagnosis | 358,000 | Patients hospitalized within 30 days of diagnosis | 42,561 |
| 6 | Patients aged ≥50 years at COVID‐19 diagnosis date | 171,683 | Patients aged ≥50 years at COVID‐19 diagnosis date | 33,380 |
| 6a | Patients hospitalized within 30 days of diagnosis | 33,805 | Patients with ventilation use or ICU stay in hospital | 10,549 |
| 6b | Patients not hospitalized | 137,878 | Patients with no ventilation/ICU | 22,831 |
| 7 | Patients matched | 66,760 | Patients matched | 20,546 |
| 7a | Cases | 33,380 | Cases | 10,273 |
| 7b | Controls | 33,380 | Controls | 10,273 |
Abbreviation: ICU, intensive care unit.