Table 2.
Factors Associated With Uptake of COVID-19 Vaccine During the First 6 Months of Vaccine Availability in VA (Dec 14, 2020–Jun 15, 2021), Cox Model (N=5,478,830)
| Factors | Hazard ratio | 95% CI |
|---|---|---|
| Female versus male | 1.05 | 1.05, 1.05 |
| Previous influenza vaccination (2019–2020 season) | 2.13 | 2.12, 2.13 |
| Charlson Comorbidity Index (ref=0) | ||
| 1 | 1.18 | 1.17, 1.18 |
| 2 | 1.22 | 1.21, 1.22 |
| ≥3 | 1.30 | 1.29, 1.30 |
| Urban (ref=urban White) | ||
| Urban Black | 1.12 | 1.12, 1.13 |
| Urban Hispanic | 1.17 | 1.16, 1.18 |
| Urban Asian/Pacific Islander | 1.22 | 1.21, 1.23 |
| Urban American Indian/Alaskan Native | 0.93 | 0.91, 0.95 |
| Urban mixed | 1.05 | 1.03, 1.06 |
| Rural White | 0.79 | 0.78, 0.79 |
| Rural Black | 1.06 | 1.05, 1.06 |
| Rural Hispanic | 0.98 | 0.97, 0.99 |
| Rural Asian/Pacific Islander | 0.86 | 0.84, 0.88 |
| Rural American Indian/Alaskan Native | 0.76 | 0.74, 0.78 |
| Rural mixed | 0.77 | 0.75, 0.79 |
| Age, years | 1.03 | 1.03, 1.03 |
| Geographic region (ref=North Atlantic) | ||
| Midwest | 1.02 | 1.01, 1.03 |
| Southeast | 1.00 | 0.99, 1.00 |
| Pacific | 1.04 | 1.04, 1.04 |
| Continental | 0.92 | 0.91, 0.92 |
| Service connected (ref=none) | ||
| <50% | 1.13 | 1.13, 1.14 |
| ≥50% | 1.23 | 1.22, 1.23 |
Dec, December; Jun, June; VA, Department of Veterans Affairs.