Table 3.
Factors associated with 1544 healthcare personnel’s receipt of 2010–2011 influenza vaccination, with crude odds ratio (COR) and confidence interval (CI) for each factor and the multivariate logistic regression model with only statistically significant predictors and their adjusted odds ratio (AOR).
| Factors | COR | (95% CI) | AOR | (95% CI)c |
|---|---|---|---|---|
| Demographics/occupation | ||||
| Age (50–65 years) | 1.5 | (1.2–2.0) | – | |
| Race (White) | 1.3 | (1.0–1.7) | – | |
| Married | 1.6 | (1.3–2.0) | 1.4 | (1.0–1.9) |
| Occupation (PA, NP, or RN manager)a | 1.6 | (1.0–2.5) | – | |
| Medical setting (Emergency Department) | 0.6 | (0.5–0.8) | 0.5 | (0.4–0.7) |
| Study site (Scott & White Healthcare) | 1.4 | (1.1–1.8) | – | |
| Influenza vaccination history for prior 5 yearsb | ||||
| None recorded (ref) | 1.0 | 1.0 | ||
| Inconsistent | 8.3 | (6.1–11.4) | 2.6 | (1.7–3.8) |
| Consistent | 23.6 | (16.3–34.3) | 4.3 | (2.7–6.8) |
| Pre-season intention to be vaccinated | ||||
| Almost zero chance (1) | 1.0 | 1.0 | ||
| Very small, small, or moderate (2–4) | 7.1 | (4.6–11.0) | 3.6 | (2.1–6.3) |
| Large or very large (5–6) | 20.0 | (11.9–33.7) | 9.8 | (4.6–21.06) |
| Almost certain (7) | 61.4 | (29.5–95.6) | 24.3 | (10.1–58.1) |
| Attitudes | ||||
| Perceived susceptibility | ||||
| Zero or very small chance (1–2) | 1.0 | 1.0 | ||
| Small (3) | 3.8 | (2.7–5.2) | 1.8 | (1.1–2.8) |
| Moderate (4) | 6.5 | (4.7–8.9) | 1.6 | (1.0–2.4) |
| Large, very large, certain (5–7) | 20.9 | (12.8–34.0) | 2.8 | (1.5–5.5) |
| Perceived vaccine effectiveness | ||||
| Not at all effective | 1.0 | 1.0 | ||
| Not too effective | 2.6 | (0.9–7.8) | 0.8 | (0.2–3.2) |
| Somewhat effective | 15.9 | (5.5–45.8) | 0.9 | (0.3–3.9) |
| Very effective | 53.4 | (18.1–157.6) | 1.2 | (0.3–5.0) |
| Concerns about vaccine scale | ||||
| No concerns (5–9) | 55.8 | (19.5–159.9) | 4.1 | (1.2–13.9) |
| Low (10–14) | 16.6 | (5.9–47.2) | 2.5 | (0.8–8.3) |
| Moderate (15–19) | 6.7 | (2.3–19.5) | 1.8 | (0.5–6.0) |
| High concerns (20–25) (referent) | 1.0 | 1.0 | ||
| Emotional benefits scale | ||||
| No benefit (5–9) (referent) | 1.0 | 1.0 | ||
| Low (10–14) | 4.9 | (3.6–6.7) | 2.0 | (1.0–4.8) |
| Moderate (15–19) | 13.1 | (9.1–18.8) | 6.8 | (2.0–22.3) |
| High benefit (20–25) | 23.3 | (15.5–34.9) | 11.7 | (2.1–63.9) |
| Emotional benefits × pre-season intention | ||||
| No benefit (5–9) × intention referent | 1.0 | |||
| Low (10–14) × intention | 0.89 | (0.74–0.99) | ||
| Moderate (15–19) × intention | 0.76 | (0.60–0.94) | ||
| High benefit (20–25) × intention | 0.70 | (0.51–0.92) |
Physician assistant (PA), nurse practitioner (NP), and nurse (RN) manager.
Consistent vaccinees had confirmed records of annual vaccination for all seasons going back 5 years or since their hiring date; inconsistent vaccinees had at least one vaccination record but no consistent history over consecutive years.
All demographic and occupational variables with significant univariate associations with vaccination were entered in the initial multivariate model, and then non-significant variables were removed as controls through backward stepwise elimination.