Table 3.

Characteristics of AKI patients with omission diagnosis.

	Total	Without operations	With operations	P value
Number of patients	2335	1461	874
Aged 18–39	241 (10.3%)	144 (9.9%)	97 (11.1%)	<0.001
Aged 40–59	729 (31.2%)	412 (28.2%)	317 (36.3%)
Aged 60–79	942 (40.3%)	573 (39.2%)	369 (42.2%)
Aged ≥ 80	423 (18.1%)	332 (22.7%)	91 (10.4%)
Cause of AKI, n(%)
Pre-renal	1338 (57.3%)	793 (54.3%)	545 (62.4%)	<0.001
Intrinsic-renal	576 (24.7%)	388 (26.6%)	188 (21.5%)	0.006
Post-renal	110 (4.7%)	75 (5.1%)	35 (4.0%)	0.213
Unclassified	311 (13.3%)	205 (14.0%)	106 (12.1%)	0.190
AKI stage, n(%)				0.109
1	1331 (57.0%)	855 (58.5%)	476 (54.5%)
2	599 (25.7%)	355 (24.3%)	244 (27.9%)
3	405 (17.3%)	251 (17.2%)	154 (17.6%)