Table 3.
Mixed Effects Logistic Regression of Risk Factors for Hospitalization and Death Among COVID-19–Positive Residents of Residential Aged Care
| Outcome | Explanatory Variable | Category | OR | 95% CI Lower Upper | P Value | |
|---|---|---|---|---|---|---|
| Hospitalization | Epidemic period | Delta epidemic period | 1.00 | |||
| Omicron epidemic period | 0.17 | 0.11 | 0.26 | <.001 | ||
| Age, y | Age, y | 1.00 | 0.99 | 1.01 | .98 | |
| Sex | Female (reference) | 1.00 | ||||
| Male | 1.32 | 1.04 | 1.68 | .02 | ||
| Up to date protected | Not up to date (reference) | 1.00 | ||||
| Up to date with vaccination | 0.81 | 0.58 | 1.12 | .20 | ||
| Unknown status | 0.75 | 0.49 | 1.14 | .18 | ||
| Outbreak | ICC | 0.21 | 0.13 | 0.31 | ||
| Death | Epidemic period | Delta epidemic period | 1.00 | |||
| Omicron epidemic period | 0.40 | 0.28 | 0.56 | <.001 | ||
| Age, y | Age, y | 1.05 | 1.04 | 1.07 | <.001 | |
| Sex | Female (reference) | 1.00 | ||||
| Male | 2.05 | 1.63 | 2.58 | <.001 | ||
| Up to date protected | Not up to date (reference) | 1.00 | ||||
| Up to date with vaccination | 0.57 | 0.42 | 0.77 | <.001 | ||
| Unknown status | 0.69 | 0.46 | 1.02 | .06 | ||
| Outbreak | ICC | 0.08 | 0.04 | 0.14 | ||
ICC, intracluster correlation coefficient.
P is for the chi-squared test.