Haematocrit level and mortality
| Admission haematocrit value | P values | |||||||
| Overall sample (n=3750) | ≤27% (n=78) | 28%–32% (n=234) | 33%–37% (n=670) | 38%–42% (n=1366) | 43%–47% (n=1059) | ≥48% (n=343) | ||
| Mortality (%) | ||||||||
| In-hospital | 3.6 | 9.0 | 6.4 | 4.6 | 2.7 | 2.4 | 5.3 | 0.0002 |
| 30-day | 7.8 | 21.8 | 14.5 | 9.3 | 7.4 | 4.9 | 7.3 | <0.0001 |
| 90-day | 14.5 | 35.9 | 31.6 | 21.5 | 12.6 | 8.6 | 9.6 | <0.0001 |
| 1-year | 18.8 | 43.6 | 38.5 | 26.9 | 16.9 | 12.6 | 10.8 | <0.0001 |