Table 3:
Outcome associations during wave 3, stratified by variant of concern and vaccination status*
| Variable | All-cause hospitalization, aOR (95% CI) | Death, aOR (95% CI) | ||||
|---|---|---|---|---|---|---|
|
|
|
|||||
| Alberta | Ontario | Pooled | Alberta | Ontario | Pooled | |
| Variant of concern | ||||||
|
| ||||||
| Wild-type | Reference | |||||
|
| ||||||
| Alpha variant | 1.86 (1.73–2.00) | 1.48 (1.41–1.56) | 1.59 (1.53–1.66) | 1.64 (1.32–2.04) | 1.19 (1.05–1.35) | 1.29 (1.16–1.44) |
|
| ||||||
| Delta variant | 2.7 (1.91–3.81) | 1.76 (1.52–2.04) | 1.88 (1.64–2.15) | 4.97 (2.37–10.43) | 1.67 (1.17–2.38) | 2.05 (1.49–2.82) |
|
| ||||||
| Vaccination status | ||||||
|
| ||||||
| Unvaccinated | Reference | |||||
|
| ||||||
| Partially vaccinated | 0.44 (0.38–0.51) | 0.42 (0.39–0.44) | 0.42 (0.40–0.45) | 0.61 (0.46–0.81) | 0.40 (0.35–0.46) | 0.43 (0.38–0.49) |
|
| ||||||
| Fully vaccinated | 0.55 (0.36–0.83) | 0.18 (0.15–0.22) | 0.22 (0.18–0.26) | 0.98 (0.55–1.77) | 0.33 (0.25–0.45) | 0.41 (0.32–0.53) |
Note: aOR = adjusted odds ratio, CI = confidence interval.
*
Adjusted for age, sex and Charlson Comorbidity Index score.