Medicine with baseline SCr (n=5034) | Medicine no baseline SCr (n=2136) | Surgery with baseline SCr (n=4191) | Surgery no baseline SCr (n=1193) | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
HA-AKI | HA-AKI 8.1% (n=409) | No HA-AKI (n=4625) | p Value | HA-AKI 6.6% (n=141) | No HA-AKI (n=1995) | p Value | HA-AKI 4.9% (n=204) | No HA-AKI (n=3987) | p Value | HA-AKI 4% (n=49) | No HA-AKI (n=1144) | p Value |
Mortality* | 21.5% (n=88) | 4.5% (n=209) | <0.001 | 23% (n=32) | 4% (n=72) | <0.001 | 5.9% (n=12) | 0.4% (n=15) | <0.001 | 8.2% (n=4) | 0.9% (n=10) | 0.002 |
LOS | 12 (6–21) | 6 (3–12) | <0.001 | 11.5 (5–20) | 5 (2–11) | <0.001 | 8 (4–14) | 3 (2–5) | <0.001 | 7 (3–17) | 3 (2–6) | <0.001 |
APS | 4 (3–5) | 3 (2–4) | <0.001 | 3 (3–4) | 2 (1–3) | <0.001 | 3 (2–4) | 2 (0–3) | <0.001 | 2 (0–3) | 0 (0–2) | <0.001 |
Age | 84 (77–89) | 79 (67–86) | <0.001 | 85 (75–91) | 74 (55–85) | <0.001 | 77 (69–84) | 69 (56–78) | <0.001 | 69 (53–83) | 52 (37–67) | <0.001 |
RR ≥20 | 28% | 23% | 0.034 | 24% | 19% | 0.139 | 8% | 5% | 0.063 | 12% | 6% | 0.055 |
<Alert AVPU | 1.7% | 1% | 0.197 | 0.8% | 0 | 0.619 | n=0 | 0.2% | 1 | n=0 | n=2 | 1 |
CKD | 29% | 10% | <0.001 | 14% | 3% | <0.001 | ||||||
Diabetes | 25% | 21% | 0.059 | 16% | 10% | 0.066 | 21% | 15% | 0.021 | 10% | 5% | 0.187 |
Heart failure | 37% | 18% | <0.001 | 28% | 9% | <0.001 | 9% | 2% | <0.001 | n=3 | n=8 | 0.009 |
Liver disease | 2% | 0.8% | 0.026 | 1% | 1% | 0.185 | 0.5% | 0.4% | 0.593 | n=0 | n=4 | 1 |
NEWS | 2 (1–4) | 1 (0–3) | <0.001 | 2 (0–3) | 1 (0–3) | 0.024 | 1 (0–2) | 1 (0–2) | 0.376 | 1 (0–2) | 1 (0–1) | 0.209 |
*refers to mortality being ‘in-patient mortality’. Bold indicates P<0.05. APS, acute kidney injury (AKI) prediction score; AVPU, consciousness scale of best response: Alert; Vocal, Pain, Unresponsive, CKD, chronic kidney disease; HA-AKI, hospital-acquired AKI (within 7 days of admission); LOS, length of stay (days) in hospital; Mortality, inhospital; NEWS, national early warning score; RR, respiratory rate (per minute); SCr, serum creatinin.