Table 5.
Multiple logistic regression analysis for estimates of predictors associated with getting COVID-19 vaccine booster dose.
| p-Value | aOR | 95% C.I. | ||
|---|---|---|---|---|
| Lower | Upper | |||
| Age in years | ||||
| 18–29 (ref) | ||||
| 26–35 | 0.001 * | 1.745 | 1.269 | 2.4 |
| 36–45 | <0.01 * | 2.478 | 1.621 | 3.787 |
| 46–54 | <0.01 * | 2.699 | 1.609 | 4.525 |
| 55 and more | <0.01 * | 5.415 | 2.719 | 10.783 |
| Gender | ||||
| Female (ref) | ||||
| Male | 0.644 | 0.941 | 0.728 | 1.217 |
| Marital status | ||||
| Unmarried (ref) | ||||
| Married | 0.403 | 0.875 | 0.639 | 1.197 |
| Region of living | ||||
| Northern (ref) | ||||
| Southern | 0.087 | 1.484 | 0.944 | 2.333 |
| Eastern | <0.01 * | 2.513 | 1.566 | 4.033 |
| Western | 0.004 * | 1.997 | 1.252 | 3.184 |
| Central | 0.06 | 1.495 | 0.983 | 2.272 |
| Education | ||||
| Below secondary (ref) | ||||
| Secondary | 0.567 | 0.816 | 0.406 | 1.638 |
| Bachelor’s degree | 0.435 | 0.765 | 0.39 | 1.5 |
| Postgraduates’ studies | 0.564 | 1.247 | 0.589 | 2.64 |
| Employment | ||||
| No (ref) | ||||
| Yes | <0.01 * | 1.729 | 1.281 | 2.332 |
| Health worker | ||||
| No (ref) | ||||
| Yes | 0.521 | 1.104 | 0.816 | 1.493 |
| Monthly income | ||||
| less than SAR 5000 (ref) | ||||
| Monthly income SAR 5000–10,000 | 0.675 | 1.072 | 0.773 | 1.488 |
| Monthly income more than SAR 10,000 | 0.908 | 1.022 | 0.704 | 1.484 |
| Obesity | ||||
| No (ref) | ||||
| Yes | 0.161 | 1.247 | 0.916 | 1.698 |
| Smoker | ||||
| No (ref) | ||||
| Yes | 0.474 | 1.109 | 0.835 | 1.472 |
| Influenza Vaccine | ||||
| “Never got before (ref)” | ||||
| “In irregular intervals” | 0.003 * | 1.437 | 1.134 | 1.821 |
| “Annual intervals” | <0.01 * | 2.387 | 1.73 | 3.293 |
| Type of vaccines for 1st dose | ||||
| “Pfizer” (ref) | ||||
| “Moderna” | <0.01 * | 1.324 | 1.16 | 1.51 |
| “Oxford AstraZeneca” | 0.383 | 0.381 | 0.045 | 0.304 |
| “Other” | 0.105 | 8.676 | 0.634 | 18.656 |
| Type of vaccines for 2nd dose | ||||
| “Pfizer” (ref) | ||||
| “Moderna” | 0.003 * | 0.794 | 0.683 | 0.922 |
| “Oxford AstraZeneca” | 0.018 * | 0.691 | 0.509 | 0.939 |
| “Other” | 0.077 | 0.066 | 0.003 | 1.348 |
| Side effect after 1st dose | ||||
| “No symptoms” (ref) | ||||
| “Mild symptoms” | 0.758 | 1.02 | 0.898 | 1.158 |
| “Moderate symptoms” | 0.257 | 0.965 | 0.712 | 1.309 |
| “Strong symptoms” | 0.725 | 0.927 | 0.609 | 1.411 |
| “Critical symptoms” | 0.942 | 1.083 | 0.124 | 9.419 |
| Side effect after 2nd dose | ||||
| “No symptoms” (ref) | ||||
| “Mild symptoms” | 0.877 | 0.976 | 0.723 | 1.318 |
| “Moderate symptoms” | 0.046 * | 0.71 | 0.507 | 0.9951 |
| “Strong symptoms” | 0.023 * | 0.615 | 0.404 | 0.935 |
| “Critical symptoms” | 0.001 * | 0.814 | 0.72 | 0.92 |
| Infected with COVID-19 | ||||
| “No” (ref) | ||||
| “Yes” | 0.471 | 0.462 | 0.057 | 3.773 |
| I lost faith in the Saudi Ministry of Health | ||||
| “Disagree” (ref) | ||||
| “Agree” | 0.748 | 0.755 | 0.137 | 4.176 |
| “Natural” | 0.471 | 0.462 | 0.057 | 3.773 |
| I lost faith in COVID-19 vaccines | ||||
| “Disagree” (ref) | ||||
| “Agree” | 0.31 | 1.4 | 0.7334 | 2.685 |
| “Neutral” | 0.013 * | 2.426 | 1.207 | 4.863 |
| Cancer patient | ||||
| No (ref) | ||||
| Yes | 0.008 * | 2.161 | 1.218 | 3.879 |
aOR = adjusted odds ratio. C.I. = confidence interval. * Statistically significant (p < 0.05). (ref) = reference.