Characteristics | Non-AKI (n = 937) | AKI (n = 402) | P value |
---|---|---|---|
Demographic variables | |||
 Age, years | 52.0 (40.2–62.3) | 61.0 (47.0–71.0) | < 0.001 |
 Male sex, n (%) | 475 (50.7) | 233 (58.0) | 0.017 |
 BMI, kg/m2 | 22.19 (20.70–23.44) | 22.16 (20.57–23.11) | 0.477 |
Preexisting clinical conditions | |||
 Hypertension, n (%) | 113 (12.1) | 123 (30.6) | < 0.001 |
 DM, n (%) | 41 (4.4) | 62 (15.4) | < 0.001 |
 CKD, n (%) | 16 (1.7) | 51 (12.7) | < 0.001 |
 CAD, n (%) | 17 (1.8) | 27 (6.7) | < 0.001 |
 Stroke, n (%) | 93 (9.9) | 93 (23.1) | < 0.001 |
 CHF, n (%) | 10 (1.1) | 25 (6.2) | < 0.001 |
 Malignancy, n (%) | 113 (12.1) | 64 (15.9) | 0.064 |
 COPD, n (%) | 15 (1.6) | 13 (3.2) | 0.062 |
 Chronic Liver disease, n (%) | 4 (0.4) | 8 (2.0) | 0.009 |
Sepsis, n (%) | 76 (8.1) | 133 (33.1) | < 0.001 |
Admission type, n (%) |  |  | < 0.001 |
 Elective surgical, n (%) | 821 (87.6) | 236 (58.7) |  |
 Emergency surgical, n (%) | 51 (5.4) | 69 (17.2) |  |
 Medical, n (%) | 65 (6.9) | 97 (24.1) |  |
Baseline serum creatinine, mg/dl | 0.69 (0.58–0.82) | 0.70 (0.57–0.94) | 0.053 |
Baseline eGFR, ml/minute/1.73 m2 | 104.58 (93.69–115.48) | 98.53 (79.57–112.31) | < 0.001 |
Serum creatinine at admission, mg/dl | 0.76 (0.64–0.92) | 1.02 (0.77–1.39) | < 0.001 |
Cys C at admission, mg/L | 0.74 (0.59–0.91) | 1.04 (0.77–1.51) | < 0.001 |
BUN at admission,mg/dl | 11.09 (8.88–13.73) | 15.13 (10.50–26.05) | < 0.001 |
Albumin at admission, g/L | 31.70 (28.00–35.00) | 30.50 (25.85–34.74) | < 0.001 |
Thyroid function at admission | |||
 FT3 (pmol/L) | 3.88 (3.39–4.32) | 3.52 (2.86–4.04) | < 0.001 |
 TT3 (nmol/L) | 0.99 (0.81–1.18) | 0.81 (0.58–1.05) | 0.001 |
 FT4 (pmol/L) | 13.37 (11.38–15.43) | 13.16 (10.86–15.66) | 0.436 |
 TT4 (nmol/L) | 99.80 (84.30–114.53) | 93.80 (71.58–110.82) | < 0.001 |
 TSH (μIU/L) | 1.36 (0.72–2.37) | 0.92 (0.52–1.86) | < 0.001 |
Low T3 syndrome at admission, n (%) | 404 (43.1) | 246 (61.2) | < 0.001 |
APACHE II score | 9 (7–13) | 15 (10–24) | < 0.001 |
UP, ml/kg/h | 2.12 (1.61–2.80) | 2.00 (1.39–2.78) | 0.008 |
Outcomes | |||
 Length of ICU stay, days | 2 (2–4) | 4 (2–9) | < 0.001 |
 Length of hospital stay, days | 15 (12–21) | 18 (13–28) | < 0.001 |
 RRT during ICU stay, n (%) | 3 (0.3) | 17 (4.2) | < 0.001 |
 ICU mortality, n (%) | 7 (0.7) | 34 (8.5) | < 0.001 |
 In-hospital mortality, n (%) | 8 (0.9) | 39 (9.7) | < 0.001 |