Table 3.
Multivariate regression analysis identifying variables predictive of health care worker COVID-19 vaccine uptake
| Predictor variables | Base model† | Base model + attitudes scale items‡ |
|---|---|---|
| Odds ratio (95% CI) | Odds ratio (95% CI) | |
| Demographics | ||
| Age | ||
| 18-44 | 1 (Reference) | 1 (Reference) |
| 45-64 | 2.25 (1.65-3.09)* | 1.11 (0.72-1.72) |
| ≥65 | 7.62 (2.63-32.6)* | 2.62 (0.71-13.12) |
| Race | ||
| White | 1 (Reference) | 1 (Reference) |
| Black | 0.23 (0.12-0.47)* | 0.34 (0.15-0.80)* |
| Asian | 2.06 (0.94-5.27) | 1.40 (0.53-4.17) |
| American Indian or Alaska Native | 0.45 (0.13-1.87) | 0.82 (0.14-4.16) |
| Native Hawaiian or other Pacific Islander | 0.74 (0.07-16.74) | 0.14 (0.00-7.10) |
| Neighborhood location | ||
| Urban | 1 (Reference) | 1 (Reference) |
| Suburban | 0.59 (0.39-0.87)* | 0.81 (0.47-1.40) |
| Rural | 0.32 (0.19-0.53)* | 0.55 (0.28-1.09) |
| Political Partisanship | ||
| Democrat | 1 (Reference) | 1 (Reference) |
| Republican | 0.13 (0.09-0.19)* | 0.54 (0.31-0.91)* |
| Other | 0.19 (0.13-0.28)* | 0.59 (0.35-1.01) |
| Occupational Classification | ||
| Physician or Advanced Practice Provider | 1 (Reference) | 1 (Reference) |
| Nurse | 0.15 (0.04-0.38)* | 0.14 (0.13-0.64)* |
| Allied Health Care Worker | 0.22 (0.06-0.61)* | 0.12 (0.02-0.54) |
| Administrative/Clerical | 0.14 (0.04-0.37)* | 0.12 (0.02-0.52)* |
| Health Care Technicians | 0.06 (0.02-0.17)* | 0.07 (0.01-0.31)* |
| Research | 0.52 (0.13-1.86) | 0.19 (0.03-1.09) |
| Facilities and Logistics | 0.12 (0.03-0.51)* | 0.12 (0.01-0.92)* |
| Student | 0.18 (0.05-0.57)* | 0.06 (0.01-0.34)* |
| Other | 0.08 (0.02-0.23)* | 0.05 (0.01-0.29)* |
| Risk Populations Exposure | ||
| Do you have a family member living with chronic illness? | 1.46 (1.09-1.96)* | 1.19 (0.80-1.76) |
| Vaccine History | ||
| Have you ever experienced side effects to the influenza vaccine or any other vaccination? | 0.67 (0.48-0.94)* | 0.94 (0.59-1.53) |
| Are you allergic to any vaccine components? | 0.31 (0.16-0.60)* | 0.27 (0.10-0.70)* |
| Did you receive a 2020 seasonal influenza vaccination? | 2.56 (1.39-4.62)* | 1.56 (0.70-3.41) |
| COVID-19 Vaccine Attitude Scale Items | ||
| I am concerned about severe allergic reactions after getting the COVID-19 vaccine | - | 0.30 (0.20-0.45)* |
| I am currently pregnant or planning to become pregnant and have concerns about how a vaccine against COVID-19 might negatively impact the fetus | - | 0.09 (0.04-0.16)* |
| People close to me think it is important for me to get vaccinated against COVID-19 | - | 5.23 (3.46-7.98)* |
| All health care workers should be vaccinated against COVID-19 | - | 13.94 (8.78-22.71)* |
| Area Under Receiver Operating Curve | 0.84 (0.82-0.86) | 0.95 (0.94-0.97)* |
COVID-19, coronavirus disease 2019.
⁎
P value <.05.
†
Base model: includes key sociodemographic variables (age, race, neighborhood location, political partisanship), occupational classification, risk populations exposure, and vaccine history variables but excludes COVID-19 Vaccine Attitudes Scale items.
‡
Base model + COVID-19 Attitude Scale items: includes all variables in base model and COVID-19 Vaccine Attitudes Scales items with P < .05.