Baseline characteristics of 1378 outpatients with chronic pulmonary disease
| Frequency of pulmonary infection during the prevaccine period | p Value* | |||
| 0 (n=1164) | 1 (n=167) | >1 (n=43) | ||
| Age | ||||
| Mean±SD | 71.3±7.0 | 73.3±6.9 | 73.0±7.0 | <0.001 |
| Median | 71 | 73 | 73 | |
| Male | 626 (53.8%) | 98 (58.7%) | 27 (62.8%) | 0.272 |
| Female | 538 (46.2%) | 69 (41.3%) | 16 (37.2%) | |
| Chronic respiratory disease† | ||||
| Bronchial asthma | 517 | 59 | 16 | |
| Chronic pulmonary emphysema | 197 | 40 | 14 | |
| Old tuberculosis | 157 | 33 | 10 | |
| Chronic bronchitis | 106 | 18 | 5 | |
| Interstitial pneumonia | 100 | 9 | 0 | |
| Non-tuberculous mycobacteria | 84 | 10 | 2 | |
| Bronchioectasis | 31 | 13 | 5 | |
| Others | 103 | 15 | 4 | |
| Pneumococcal polysaccharide vaccine 23-vaccinated | 512 (44.0%) | 109 (65.3%) | 25 (58.1%) | <0.001 |
| Pneumococcal polysaccharide vaccine 23-unvaccinated | 652 (56.0%) | 58 (34.7%) | 18 (41.9%) | |
| Chronic respiratory failure | ||||
| + | 70 (6.0%) | 20 (12.0%) | 7 (16.3%) | <0.001 |
| − | 1094 (94.0%) | 147 (88.0%) | 36 (83.7%) | |
* Data were analysed using the Wilcoxon test or Pearson test.
† Some patients were diagnosed as having more than one chronic respiratory disease.