Table 4.
Subgroup analysis of the conditional logistic regression between vaccination and non- vaccination groups.
| Variable | Vaccination | Non-Vaccination | OR | 95% CI | ||
|---|---|---|---|---|---|---|
| N | No. of Pneumonia Event | N | No. of Pneumonia Event | |||
| Age a | ||||||
| <40 | 513 | 271 | 2965 | 1468 | 1.17 | 0.94–1.46 |
| 40–65 | 219 | 143 | 2547 | 1240 | 1.69 ** | 1.23–2.33 |
| ≥65 | 4516 | 2145 | 4370 | 2298 | 0.78 ** | 0.71–0.86 |
| Gender b | ||||||
| Female | 1869 | 943 | 4113 | 2048 | 0.99 | 0.87–1.13 |
| Male | 3379 | 1616 | 5769 | 2958 | 0.78 ** | 0.7–0.87 |
a Adjusted for hypertension, diabetes, cerebrovascular disease, renal disease, liver disease, ischemic heart disease, and malignancy. b Adjusted for hypertension, diabetes, cerebrovascular disease, renal disease, liver disease, ischemic heart disease, dementia, alcohol-related disorder, and malignancy. ** p < 0.01.