Table 5. In-hospital mortality stratified by AKI or No-AKI.
| Classification | AKI | No AKI |
| RIFLE(all stages) | 76(23.5%)* | 60(8.8%) |
| Risk | 27(19.1%)* | - |
| Injury | 28(24.1%)* | - |
| Failure | 21(31.8%)* # | - |
| AKIN(all stages) | 83(23.8%)* | 53(8.1%) |
| Stage 1 | 28(17.8%)* | - |
| Stage 2 | 22(21.8%)* | - |
| Stage 3 | 33(36.3%)* #& | - |
| KDIGO(all stages) | 92(23.5%)* | 44(7.2%) |
| Stage 1 | 36(18.6%)* | - |
| Stage 2 | 23(22.1%)* | - |
| Stage 3 | 33(35.5%)* #& | - |
| K(+)R(−) + K(+)A(−) | 25(22.7%)* | 44(7.2%) |
| Stage 1 | 20(20.4%)* | - |
| Stage 2 | 1(33.3%) | - |
| Stage 3 | 4(44.4%)* | - |
K(+)R(−)+K(+)A(−): AKI diagnosed by DIGO criteria but missed by RIFLE or AKIN.
*: compared with No-AKI group, P<0.05;
#
: compared with Stage 1 or Stage Risk, P<0.05;
&
: compared with Stage 2, P<0.05.