Table 1 Characteristics of the population
AKI stays (N = 415,067) | No-AKI stays (N = 26,502,765) | Whole population (N = 26,917,832) | |
|---|---|---|---|
Hospital status | |||
Private | 51,079 (12.3) | 8,654,271 (32.7) | 8,705,350 (32.3) |
Public | 363,988 (87.7) | 17,848,494 (67.3) | 18,212,482 (67.7) |
Stay characteristics | |||
Admission | |||
-From home | 136,269 (32.8) | 21,580,666 (81.4) | 21,716,935 (80.7) |
-From another hospital MSO | 42,531 (10.2) | 465,526 (1.8) | 508,057 (1.9) |
-From ER | 227,377(54.8) | 4,296,995 (16.2) | 4,524,372 (16.8) |
Discharge | |||
-To home | 238,392 (57.4) | 24,726,121 (93.3) | 24,964,513 (92.7) |
-To another hospital MSO | 50,507 (12.2) | 644,588 (2.4) | 695,095 (2.6) |
-To rehabilitation care | 50,215 (12.1) | 618,619 (2.3) | 668,834 (2.5) |
Main diagnosis at admissiona | |||
-Other forms of heart diseases | 60,736 (14.6) | 877,232 (3.3) | 937,968 (3.4) |
-Renal failure (including AKI) | 51,564 (12.5) | 132,141 (0.5) | 183,705 (0.7) |
-Persons encountering health services for specific procedures and health care | 30,010 (7.2) | 9,428,443 (35.6) | 9,458,453 (35.1) |
-Influenza and pneumonia | 20,781 (5) | 210,870 (0.8) | 231,651 (0.9) |
Risk factors | |||
-Sepsis | 83,553 (20.1) | 337,990 (1.3) | 421,543 (1.6) |
-Surgery | 75,797 (18.3) | 7,450,610 (28.1) | 7,526,407 (28.0) |
-Heart failure | 96,673(23.3) | 514,199 (1.9) | 610,872 (2.3) |
-Diabetes | 109,004 (26.3) | 1,339,975 (5.1) | 1,448,979 (5.4) |
-Chronic kidney disease | 111,746 (26.9) | 3,238,058 (12.2) | 3,349,804 (12.4) |
Treatments during hospital stay | |||
-Vasopressors | 49,853 (12) | 77,912 (0.3) | 127,765 (0.5) |
-Mechanical ventilation | 44,900 (10.8) | 121,258 (0.5) | 166,158 (0.6) |
-RRT for AKI | 40,436 (9.7) | 0 (0.0) | 40,436 (0.2) |
-Oxygen delivery | 57 028 (13.7) | 328 014 (1.2) | 385 042 (1.4) |
Death during stay | 59,338 (14.3) | 237,673 (0.9) | 297,011 (1.1) |
Length of stay, mean (SD), days | 12.5 (14.7) | 2.3 (6.1) | 2.5 (6.4) |
ICU admission during stay (yes) | 71,277 (17.2) | 208,265 (0.8) | 279,542 (1.0) |
-Length of ICU stay, mean (SD), days | 19.4 (22.2) | 10.1 (13.9) | 11.4 (15.6) |
Patient characteristics | |||
Age, mean (SD), years | 74.2 (16.4) | 55.8 (23.9) | 56.0 (23.9) |
Male sex | 235,554 (56.8) | 12,657,336 (47.8) | 12,892,890 (47.9) |