Table 2.
Multinomial logistic regression analysis results with stepwise variable selection procedure examining the determinants of two outcomes of interest.
| Model 1. Knowledge that seasonal influenza, herpes-zoster, pneumococcal, and meningococcal vaccinations are recommended Log likelihood = −350.73, χ2 = 349.42 (39 df), p < 0.0001 | |||||||||
| One vaccination | Two vaccinations | Three or four vaccinations | |||||||
| Variable | RRR | 95% CI | p | RRR | 95% CI | p | RRR | 95% CI | p |
| Considering vaccine-preventable diseases severe for individuals with chronic medical conditions | 1.19 | 1.07–1.34 | 0.01 | 1.43 | 1.21–1.69 | <0.001 | 1.41 | 1.17–1.69 | <0.001 |
| No need of additional information on vaccines for patients with chronic medical conditions | 0.58 | 0.32–1.05 | 0.07 | 0.55 | 0.25–1.21 | 0.13 | 0.25 | 0.11–0.61 | 0.01 |
| Younger | 0.98 | 0.96–1.01 | 0.09 | 1.01 | 0.99–1.04 | 0.31 | 1.03 | 1.01–1.06 | 0.01 |
| Having a cohabitant with a chronic medical condition | 1.69 | 0.91–3.17 | 0.11 | 1.58 | 0.69–3.59 | 0.27 | 0.77 | 0.29–2.03 | 0.61 |
| More time from the main chronic disease diagnosis | 1.02 | 0.99–1.04 | 0.21 | 1.03 | 0.99–1.07 | 0.07 | 1.05 | 1.01–1.08 | 0.01 |
| Having been advised from a general practitioner to receive the recommended vaccinations | |||||||||
| None | 1 * | ||||||||
| One | 0.33 | 0.04–2.24 | 0.25 | 0.03 | 0.01–0.19 | <0.001 | 0.01 | 0.01–0.05 | <0.001 |
| Two | 5.79 | 0.84–39.65 | 0.07 | 0.17 | 0.03–0.92 | 0.04 | 0.01 | 0.01–0.09 | <0.001 |
| Three or four | 1.49 | 0.16–13.79 | 0.72 | 1.65 | 0.27–10.1 | 0.58 | 0.06 | 0.01–0.44 | 0.01 |
| Married/cohabited with a partner | 1.29 | 0.67–2.49 | 0.43 | 1.67 | 0.71–3.96 | 0.24 | 0.71 | 0.29–1.71 | 0.44 |
| Fewer number of visits with a physician in the last year | 0.99 | 0.96–1.02 | 0.53 | 0.97 | 0.94–1.02 | 0.26 | 0.96 | 0.91–1.01 | 0.13 |
| Number of chronic medical conditions | |||||||||
| One | 1 * | ||||||||
| Two | 0.89 | 0.46–1.72 | 0.72 | 2.08 | 0.91–4.81 | 0.08 | 1.11 | 0.43–2.83 | 0.83 |
| At least three | 0.41 | 0.13–1.19 | 0.11 | 1.57 | 0.48–5.11 | 0.45 | 0.42 | 0.09–1.93 | 0.26 |
| Graduated | 1.04 | 0.53–2.04 | 0.89 | 2.12 | 0.88–5.09 | 0.09 | 2.97 | 1.21–7.29 | 0.01 |
| Model 2. Having received herpes-zoster, pneumococcal, and meningococcal vaccinations Log likelihood = −145.26, χ2 = 225.73 (24 df), p < 0.0001 |
|||||||||
| One vaccination | Two or three vaccinations | ||||||||
| Having been advised from a general practitioner to receive at least one recommended vaccination | 12.44 | 5.21–29.72 | <0.001 | 20.12 | 5.59–72.46 | <0.001 | |||
| Knowledge of the recommended vaccinations | |||||||||
| None | 1 * | ||||||||
| One | 5.12 | 1.85–14.15 | 0.01 | 2.94 | 0.41–21.16 | 0.28 | |||
| Two or three | 6.31 | 2.23–17.85 | 0.01 | 34.63 | 7.42–161.57 | <0.001 | |||
| Higher perceived risk of acquiring vaccine-preventable diseases | 2.55 | 1.11–5.84 | 0.02 | 0.77 | 0.25–2.41 | 0.66 | |||
| Number of chronic medical conditions | |||||||||
| One | 1 * | ||||||||
| Two | 2.42 | 1.04–5.62 | 0.04 | 1.43 | 0.45–4.57 | 0.54 | |||
| At least three | 3.21 | 0.99–10.27 | 0.05 | 0.27 | 0.01–4.24 | 0.35 | |||
| Unmarried/separated/divorced/widowed | 0.56 | 0.22–1.41 | 0.21 | 0.43 | 0.12–0.58 | 0.21 | |||
| Believing in the safety of vaccinations | 1.55 | 0.61–4.01 | 0.35 | 1.58 | 0.41–6.08 | 0.51 | |||
| Fewer number of visits with a physician in the last year | 0.98 | 0.93–1.03 | 0.43 | 1.03 | 0.97–1.08 | 0.29 | |||
| Older | 1.01 | 0.98–1.03 | 0.53 | 0.97 | 0.94–1.01 | 0.17 | |||
| More time from the main chronic disease diagnosis | 1.01 | 0.97–1.03 | 0.89 | 1.03 | 0.99–1.07 | 0.12 | |||
| Believing in the usefulness of vaccinations | 1.02 | 0.85–1.23 | 0.77 | 1.23 | 0.89–1.69 | 0.19 | |||
* Reference category.