Table 4.
Multivariate logistic regression analyses to characterize factors associated with the outcomes of interest.
| OR | SE | 95% CI | p-value | |
|---|---|---|---|---|
| Model 1. Perceived risk of developing COVID-19 | ||||
| Log likelihood = − 330.14; χ2 = 190.43 (14 df); p < 0.0001 | ||||
| Older | 1.06 | 0.01 | 1.04–1.08 | < 0.001 |
| Being affected by chronic diseases | 2.68 | 0.6 | 1.73–4.16 | < 0.001 |
| Reporting at least one common symptom compatible with COVID-19 in the previous 3 months | 1.55 | 0.33 | 1.03–2.35 | 0.037 |
| Poor knowledge about effective infection control measures for COVID-19 | 0.56 | 0.14 | 0.34–0.92 | 0.023 |
| Believing that COVID-19 will cause serious consequences in their prison | 3.12 | 1.07 | 1.59–6.12 | 0.001 |
| Perceiving to be at high risk of severe complications caused by COVID-19 | 2.4 | 0.73 | 1.32–4.35 | 0.004 |
| Believing that COVID-19 will continue to spread in Italy | 1.86 | 0.41 | 1.21–2.86 | 0.005 |
| Institution | ||||
| Prison 1 | 1a | |||
| Prison 2 | 0.67 | 0.14 | 0.43–1.02 | 0.062 |
| Married/cohabitant | 1.37 | 0.3 | 0.89–2.1 | 0.152 |
| Not having sons/daughters | 0.67 | 0.18 | 0.39–1.14 | 0.142 |
| Having had depression symptoms | 1.55 | 0.38 | 0.96–2.51 | 0.075 |
| Having had generalized anxiety symptoms | 1.24 | 0.31 | 0.76–2.01 | 0.392 |
| Not having received information about COVID-19 from family and friends | 0.75 | 0.15 | 0.5–1.12 | 0.159 |
| Need of additional information about COVID-19 | 1.42 | 0.34 | 0.88–2.27 | 0.149 |
| Model 2. Self-confidence about the ability to protect themselves from SARS-CoV-2 infection | ||||
| Log likelihood = − 305.41; χ2 = 74.67 (9 df); p < 0.0001 | ||||
| Not reporting at least one common symptom compatible with COVID-19 in the previous 3 months | 0.45 | 0.01 | 0.3–0.69 | < 0.001 |
| Institution | ||||
| Prison 1 | 1.79 | 0.38 | 1.18–2.73 | 0.006 |
| Prison 2 | 1a | |||
| Working activity inside the prison | 2.31 | 0.5 | 1.51–3.54 | < 0.001 |
| No generalized anxiety symptoms | 0.61 | 0.13 | 0.4–0.92 | 0.019 |
| No need of additional information about COVID-19 | 0.46 | 0.1 | 0.3–0.71 | < 0.001 |
| Foreigners | 0.57 | 0.23 | 0.26–1.26 | 0.163 |
| Not believing that COVID-19 will cause serious consequences in their prison | 0.65 | 0.17 | 0.39–1.09 | 0.103 |
| Poor knowledge about effective infection control measures for COVID-19 | 0.78 | 0.2 | 0.46–1.3 | 0.339 |
| Having received information about COVID-19 from physicians | 1.47 | 0.38 | 1.18–2.73 | 0.132 |
| Model 3. Willingness to receive COVID-19 vaccination | ||||
| Log likelihood = − 343.85; χ2 = 126.81 (10 df); p < 0.0001 | ||||
| Older | 1.04 | 0.009 | 1.02–1.06 | < 0.001 |
| Institution | ||||
| Prison 1 | 1a | |||
| Prison 2 | 2.71 | 0.62 | 1.73–4.25 | < 0.001 |
| Prison 3 | 4.46 | 1.07 | 2.78–7.14 | < 0.001 |
| Knowing that a COVID-19 vaccination is available | 2.61 | 0.6 | 1.67–4.1 | < 0.001 |
| Believing that COVID-19 is more serious than influenza | 2.21 | 0.84 | 1.05–4.66 | 0.037 |
| Self-confidence about the ability to protect themselves from SARS-CoV-2 infection | 1.65 | 0.4 | 1.03–2.64 | 0.038 |
| High school or university degree | 1.34 | 0.29 | 0.87–2.06 | 0.176 |
| Being affected by chronic diseases | 1.24 | 0.28 | 0.79–1.94 | 0.341 |
| Not believing that COVID-19 will continue to spread in Italy | 0.82 | 0.16 | 0.55–1.21 | 0.321 |
| Having received information about COVID-19 from family and friends | 1.34 | 0.27 | 0.9–2.01 | 0.150 |
aReference category.