Table 1.
Population characteristics by time period and AKI status
| Characteristic | Pre-CDSS, October 2012–September 2013, n=181,696 | Post-CDSS October 2013–September 2015, n=346,412 | ||||
|---|---|---|---|---|---|---|
| No AKI, n=161,661 | AKI, n=20,035 | Total, n=181,696 | No AKI, n=301,935 | AKI, n=44,477 | Total, n=346,412 | |
| Age, yr, mean±SD | 58±20 | 69±16 | 59±20 | 57±20 | 69±16 | 59±20 |
| Women, n (%) | 94,434 (58.4) | 9350 (46.7) | 103,784 (57.1) | 175,457 (58.1) | 20,281 (45.6) | 195,738 (56.5) |
| Race, n (%) | ||||||
| Black | 20,090 (12.4) | 2742 (13.7) | 22,832 (12.6) | 37,657 (12.5) | 6445 (14.5) | 44,102 (12.7) |
| White | 136,376 (84.4) | 16,586 (82.8) | 152,962 (84.2) | 252,968 (83.8) | 36,424 (81.9) | 289,392 (83.5) |
| Other | 5195 (3.2) | 707 (3.5) | 5902 (3.3) | 11,310 (3.8) | 1608 (3.6) | 12,918 (3.7) |
| Charlson Index | ||||||
| Mean±SD | 1.7±2.2 | 3.3±2.4 | 1.8±2.3 | 1.7±2.2 | 3.4±2.4 | 1.9±2.3 |
| Median (IQR) | 1 (0–2) | 3 (1–5) | 1 (0–3) | 1 (0–2) | 3 (2–5) | 1 (0–3) |
| Comorbidities, n (%) | ||||||
| AMI | 14,881 (9) | 3440 (17) | 18,321 (10) | 26,886 (9) | 7334 (16) | 34,220 (10) |
| Diabetes | 30,005 (19) | 6135 (31) | 36,140 (20) | 55,386 (18) | 13,184 (30) | 68,570 (20) |
| Diabetes + complications | 5771 (4) | 2056 (10) | 7827 (4) | 11,799 (4) | 4973 (11) | 16,772 (5) |
| Hemiplegia or paraplegia | 2219 (1) | 351 (2) | 2570 (1) | 4211 (1) | 710 (2) | 4921 (1) |
| Renal disease | 13,309 (8) | 8282 (41) | 21,591 (12) | 25,247 (8) | 19,294 (43) | 44,541 (13) |
| Cancer | 16,915 (10) | 2396 (12) | 19,311 (11) | 32,329 (11) | 5672 (13) | 38,001 (11) |
| Mild LD | 3565 (2) | 1141 (6) | 4706 (3) | 6712 (2) | 2649 (6) | 9361 (3) |
| Moderate/severe LD | 2029 (1) | 1026 (5) | 3055 (2) | 4057 (1) | 2389 (5) | 6446 (2) |
| Metastatic cancer | 7663 (5) | 1046 (5) | 8709 (5) | 13,166 (4) | 2342 (5) | 15,508 (4) |
| AIDS | 308 (0) | 68 (0) | 376 (0) | 652 (0) | 144 (0) | 796 (0) |
| CHF | 20,249 (13) | 6969 (35) | 27,218 (15) | 38,975 (13) | 16,246 (37) | 55,221 (16) |
| PVD | 9807 (6) | 2309 (12) | 12,116 (7) | 18,389 (6) | 5710 (13) | 24,099 (7) |
| CEVD | 11,989 (7) | 1883 (9) | 13,872 (8) | 22,933 (8) | 4491 (10) | 27,424 (8) |
| Dementia | 589 (0) | 164 (1) | 753 (0) | 1115 (0) | 362 (1) | 1477 (0) |
| COPD | 38,440 (24) | 5892 (29) | 44,332 (24) | 73,606 (24) | 12,931 (29) | 86,537 (25) |
| LOS | ||||||
| Mean±SD | 5.3±8.5 | 9.3±11.5 | 5.7±9.0 | 5.3±8.7 | 9.0±10.8 | 5.7±9.1 |
| Median (IQR) | 3 (2–6) | 6 (4–11) | 4 (2–6) | 3 (2–6) | 6 (3–11) | 4 (2–6) |
| Mortality, n (%) | 2349 (1.5) | 2044 (10.2) | 4393 (2.4) | 4236 (1.4) | 4174 (9.4) | 8410 (2.4) |
IQR, interquartile range; AMI, acute myocardial infarction; LD, liver disease; CHF, congestive heart failure; PVD, peripheral vascular disease; CEVD, cerebrovascular disease; COPD, chronic obstructive pulmonary disease.