Table 4 In-hospital mortality for pneumonia patients by hospital case volume level, after stratification by A-DROP score calculated from the Pneumonia Severity Indices at admission, Japanese DPC database, 2010
A-DROPScore | Â | Â | Hospital case volume level | Â | |||
|---|---|---|---|---|---|---|---|
|  | Total* | Very low (≤7) | Low (8–11) | Medium (12–17) | High (≥18) | p†| |
0 | N | 4906 | 1027 | 1193 | 1283 | 1403 | 0.31 |
Deaths | 29 | 9 | 6 | 7 | 7 | ||
% | 0.6 | 0.9 | 0.5 | 0.6 | 0.5 | ||
1 | N | 1981 | 421 | 487 | 524 | 549 | 0.72 |
Deaths | 61 | 6 | 22 | 20 | 13 | ||
% | 3.1 | 1.4 | 4.5 | 3.8 | 2.4 | ||
2 | N | 701 | 158 | 184 | 176 | 183 | 0.01 |
Deaths | 58 | 18 | 20 | 12 | 8 | ||
% | 8.3 | 11.4 | 10.9 | 6.8 | 4.4 | ||
3 | N | 220 | 48 | 43 | 61 | 68 | 0.76 |
Deaths | 52 | 14 | 7 | 15 | 16 | ||
% | 23.6 | 29.2 | 16.3 | 24.6 | 23.5 | ||
4 | N | 120 | 34 | 34 | 28 | 24 | 0.36 |
Deaths | 53 | 14 | 14 | 12 | 13 | ||
% | 44.2 | 41.2 | 41.2 | 42.9 | 54.2 | ||