Table 2.

Predictors of postoperative AKI requiring dialysis

CharacteristicsCoefficientSEMP ValueAdjusted Odds Ratio (95% Confidence Interval)
Intercept−9.2280.122<0.001
Age, per yr0.0120.001<0.0011.01 (1.01 to 1.02)
Ascites0.9710.089<0.0012.64 (2.22 to 3.14)
Congestive heart failure0.8320.059<0.0012.30 (2.05 to 2.58)
Emergency surgery0.7730.042<0.0012.17 (2.00 to 2.35)
Hypertension requiring medication0.4400.038<0.0011.55 (1.44 to 1.67)
Diabetes, reference: no diabetes
 Insulin dependent0.6670.043<0.0011.95 (1.79 to 2.12)
 Noninsulin dependent0.2190.046<0.0011.25 (1.14 to 1.36)
Serum sodium, reference: 135.1–145, mEq/L
 0–1300.3280.071<0.0011.39 (1.21 to 1.60)
 130.1–1350.1930.041<0.0011.21 (1.12 to 1.31)
 >1450.3900.090<0.0011.48 (1.24 to 1.76)
 Missing−0.1650.1810.360.85 (0.59 to 1.21)
Serum hematocrit, reference: >30, %
 0–240.8020.073<0.0012.23 (1.93 to 2.57)
 24.1–300.6880.041<0.0011.99 (1.83 to 2.16)
 Missing−0.5820.167<0.0010.56 (0.40 to 0.78)
Preoperative sepsis, reference: no
 SIRS0.9590.056<0.0012.61 (2.34 to 2.91)
 Sepsis1.2380.056<0.0013.5 (3.09 to 3.85)
 Septic shock2.1160.062<0.0018.30 (7.35 to 9.38)
Surgery type, reference: anorectal, appendix
 ENT0.2550.3720.491.29 (0.62 to 2.68)
 Bariatric, stomach, esophagus1.4250.127<0.0014.16 (3.24 to 5.33)
 Brain0.8720.210<0.0012.39 (1.58 to 3.61)
 Cardiac2.8640.141<0.00117.53 (13.30 to 23.09)
 Endocrine, thyroid, parathyroid, adrenal, breast−0.4270.2030.040.65 (0.44 to 0.97)
 Gallbladder, biliary tract0.5550.140<0.0011.74 (1.33 to 2.29)
 Hernia, peritoneum, omentum, diverticulum0.9200.121<0.0012.51 (1.98 to 3.18)
 Intestine (not rectum)1.6900.111<0.0015.42 (4.36 to 6.73)
 Liver, pancreas, spleen2.5650.126<0.00113.00 (10.16 to 16.64)
 OBGYN0.2030.1730.241.23 (0.87 to 1.72)
 Orthopedic lower extremity, pelvis0.7320.118<0.0012.08 (1.7 to 2.62)
 Orthopedic upper extremity, shoulder0.0200.2600.941.02 (0.61 to 1.70)
 Skin, subcutaneous, other musculoskeletal0.9090.129<0.0012.48 (1.93 to 3.20)
 Spine0.5930.148<0.0011.81 (1.35 to 2.42)
 Thoracic (nonesophageal)1.9130.149<0.0016.77 (5.06 to 9.07)
 Urology1.5900.124<0.0014.90 (3.85 to 6.25)
 Vascular (endovascular aneurysm repair)2.3100.151<0.00110.07 (7.50 to 13.53)
 Vascular (open aorta surgery)3.9930.128<0.00154.20 (42.19 to 69.64)
 Vascular (other)1.7090.119<0.0015.53 (4.37 to 6.98)
Preoperative serum creatinine per 1 mg/dl, mg/dl0.4490.008<0.0011.57 (1.54 to 1.59)
  • SIRS, systemic inflammatory response syndrome; ENT, Ear, Nose, Throat: OBGYN, Obstetrics and Gynecology.