| Patients, n | Univariable analysis | Multivariable analysisb | ||||
---|---|---|---|---|---|---|---|
Total | Dead | Mortality rate (%) | OR (95% CI) | p | Adjusted OR (95% CI) | p | |
Full cohort (N = 20,945) | |||||||
 April–Junea (reference) | 5282 | 215 | 4.1 | 0.931 (0.796–1.088) | 0.368 | 0.980 (0.748–1.284) | 0.885 |
 July–March | 15,663 | 683 | 4.4 |  |  |  |  |