Table 3 Number of comorbidities associated with ICU admission in patients hospitalized with pneumonia —Vaccine Safety Data Link (VSD), 2006–2010
From: Rates and risk factors associated with hospitalization for pneumonia with ICU admission among adults
Age-groups and number of comorbidities | Number in comorbidity strata (% within age group) | No ICU admission (n = 96,879) No. (row %) | ICU Admission (n = 22,658) No. (row %) | Odds ratio (95% CI) |
|---|---|---|---|---|
18–49 years (n = 13,999) | 11,429 (81.6) | 2570 (18.4) | ||
0 co-morbidities | 3687 (26.3) | 3243 (88.0) | 444 (12.0) | REF |
1 co-morbidity | 5630 (40.2) | 4474 (79.5) | 1156 (20.5) | 1.89 (1.68–2.12) |
2 co-morbidities | 2205 (15.8) | 1758 (79.7) | 447 (20.3) | 1.86 (1.61–2.14) |
≥ 3 co-morbidities | 2477 (17.7) | 1954 (78.9) | 523 (21.1) | 1.95 (1.70–2.24) |
50–64 years (n = 24,893) | 19,666 (79.0) | 5227 (21.0) | ||
0 co-morbidities | 2855 (11.5) | 2517 (88.2) | 338 (11.8) | REF |
1 co-morbidity | 8376 (33.6) | 6574 (78.5) | 1802 (21.5) | 2.04 (1.80–2.31) |
2 co-morbidities | 5272 (2.21) | 4099 (77.7) | 1173 (22.3) | 2.13 (1.87–2.43) |
≥ 3 co-morbidities | 8390 (33.7) | 6476 (77.2) | 1914 (22.8) | 2.20 (1.94–2.49) |
65–74 years (n = 24,724) | 19,541 (79.0) | 5183 (21.0) | ||
0 co-morbidities | 1203 (4.9) | 1076 (89.4) | 127 (10.6) | REF |
1 co-morbidity | 5815 (23.5) | 4639 (79.8) | 1176 (20.2) | 2.15 (1.77–2.61) |
2 co-morbidities | 5867 (23.7) | 4628 (78.9) | 1239 (21.1) | 2.27 (1.87–2.75) |
≥ 3 co-morbidities | 11,839 (47.9) | 9198 (77.7) | 2641 (22.3) | 2.43 (2.01–2.94) |
75–84 years (n = 32,880) | 26,870 (81.7) | 6010 (18.3) | ||
0 co-morbidities | 1228 (3.7) | 1100 (89.6) | 128 (10.4) | REF |
1 co-morbidity | 6765 (20.6) | 5601 (82.8) | 1164 (17.2) | 1.79 (1.47–2.17) |
2 co-morbidities | 8363 (25.4) | 6853 (81.9) | 1510 (18.1) | 1.89 (1.56–2.29) |
≥ 3 co-morbidities | 16,524 (50.3) | 13,316 (80.6) | 3208 (19.4) | 2.07 (1.72–2.50) |
≥85 years (n = 23,041) | 19,373 (84.1) | 3668 (15.9) | ||
0 co-morbidities | 1089 (4.7) | 997 (91.6) | 92 (8.4) | REF |
1 co-morbidity | 5757 (25,0) | 4865 (84.5) | 892 (15.5) | 1.99 (1.59–2.49) |
2 co-morbidities | 6253 (27.1) | 5256 (84.1) | 997 (15.9) | 2.06 (1.64–2.57) |
≥ 3 co-morbidities | 9942 (43.1) | 8255 (83.0) | 1687 (17.0) | 2.21 (1.78–2.76) |