. Author manuscript; available in PMC: 2025 Apr 1.

Published in final edited form as: Anesth Analg. 2024 Feb 9;138(4):728–737. doi: 10.1213/ANE.0000000000006765

Table 2 –

Unadjusted outcomes by preoperative anemia status^*

	Preoperative anemia (N=1234)	No anemia (N=2883)
Acute kidney injury	219 (17.7%)	218 (7.6%)
AKI stage
No AKI	1015 (82.3%)	2665 (92.4%)
Stage 1	134 (10.9%)	159 (5.5%)
Stage 2	52 (4.2%)	46 (1.6%)
Stage 3	33 (2.7%)	13 (0.5%)
Hospital length of stay, days	6.7 (5.7, 8.5)	5.8 (4.9, 7.5)
Reoperation within 7 days	232 (18.8%)	437 (15.2%)
Vascular complications	67 (5.4%)	99 (3.4%)
Hospital mortality	4 (0.3%)	4 (0.1%)

AKI – acute kidney injury.

Continuous and categorical outcomes are presented as median (25^th percentile, 75^th percentile) and frequency (percentage) respectively. Vascular complications include stroke, myocardial infarction, and pulmonary embolism.