Table 1. Demographics of hospitalized CAP in Korea.
| Total (n = 54,307) | 1st QA (n = 15,431) | 2nd QA (n = 23,099) | 3rd QA (n = 15,777) | P value | |
|---|---|---|---|---|---|
| Age, yr | 64.4 ± 18.9 | 65.2 ± 17.6 | 66.1 ± 17.7 | < 0.001 | |
| Male sex | 7,369 (47.8) | 10,682 (46.2) | 7,853 (49.9) | < 0.001 | |
| Hospital types | < 0.001 | ||||
| Tertiary | 1,666 (10.8) | 2,720 (11.8) | 2,024 (12.8) | ||
| General | 8,809 (57.1) | 13,766 (59.6) | 9,351 (59.3) | ||
| Hospital | 4,956 (32.1) | 6,613 (28.6) | 4,402 (27.9) | ||
| ER visit | 9,793 (63.5) | 14,677 (63.5) | 9,323 (59.1) | < 0.001 | |
| Admission room | < 0.001 | ||||
| GW | 14,042 (91.0) | 22,087 (95.6) | 14,919 (94.6) | ||
| ICU | 1,355 (8.8) | 998 (4.3) | 846 (5.4) | ||
| ER | 34 (0.2) | 13 (0.1) | 12 (0.1) | ||
| Severity index use | 8,977 (58.2) | 15,592 (67.5) | 11,890 (75.4) | < 0.001 | |
| CURB | 8,813 (57.1) | 15,442 (66.9) | 11,723 (74.3) | < 0.001 | |
| Score | 1.10 ± 1.05 | 1.11 ± 0.98 | 1.21 ± 0.99 | < 0.001 | |
| Confusion | 888 (10.1) | 1,881 (8.2) | 781 (5.0) | < 0.001 | |
| Urea > 20 mg/dL | 2,232 (14.5) | 5,333 (23.1) | 3,894 (24.7) | < 0.001 | |
| RR > 30 count/hour | 264 (1.7) | 590 (2.6) | 261 (1.7) | 0.687 | |
| SBP < 90 mmHg or DBP < 60 mmHg | 547 (3.5) | 1,216 (5.3) | 1,024 (6.5) | < 0.001 | |
| PSI | 92 (0.6) | 97 (0.4) | 106 (0.7) | 0.351 | |
| Score | 85.87 ± 37.82 | 66.95 ± 30.44 | 81.96 ± 29.69 | < 0.001 | |
| CCI, points | 2.96 ± 2.04 | 2.91 ± 2.01 | 3.10 ± 2.11 | < 0.001 | |
| Smoking status | 0.022 | ||||
| Current | 1,348 (12.9) | 2,093 (11.5) | 1,503 (11.6) | ||
| Ex (≤ 1 yr) | 217 (2.1) | 323 (1.8) | 213 (1.6) | ||
| Ex (> 1 yr) | 1,098 (10.5) | 1,920 (10.5) | 1,586 (12.2) | ||
| Never | 7,758 (74.5) | 13,889 (76.2) | 9,691 (74.6) | ||
| Pneumococcal vaccination | 4,663 (53.2) | 9,590 (71.5) | 7,665 (80.5) | < 0.001 | |
| Antibiotics | |||||
| Triple | 181 (1.2) | 219 (1.0) | 198 (1.3) | 0.476 | |
| Dual | 4,653 (30.2) | 6,988 (30.3) | 5,173 (32.8) | < 0.001 | |
| Single | 10,590 (68.7) | 15,883 (68.8) | 10,404 (66.0) | < 0.001 | |
| CAP scores, points | 6.54 ± 2.35 | 7.11 ± 2.18 | 7.54 ± 2.03 | < 0.001 | |
| Hospital LOS, days | 10.50 ± 6.88 | 9.68 ± 6.10 | 9.78 ± 6.07 | < 0.001 | |
| Outcome | < 0.001 | ||||
| Improved | 13,372 (87.0) | 21,081 (91.4) | 14,155 (89.8) | ||
| Transfer | 1,042 (6.8) | 1,223 (5.3) | 975 (6.2) | ||
| Death + Hopeless discharge | 960 (6.2) | 774 (3.4) | 637 (4.0) | ||
| 30-day mortality | 912 (5.9) | 666 (2.9) | 607 (3.9) | < 0.001 | |
Values are presented as number of patients (%) or mean ± standard deviation.
QA = quality assessment, ER = emergent room, GW = general ward, ICU = intensive care unit, RR = respiration rate, SBP = systolic blood pressure, DBP = diastolic blood pressure, PSI = pneumonia severity index, CCI = Charlson comorbidity index, CAP = community-acquired pneumonia, LOS = length of stay.