Table 2 Patient characteristics [Significant differences (p < 0.05)].
Characteristics | Total (n = 922) | CONUT > 1.0 (n = 370) | CONUT ≤ 1.0 (n = 552) | p-value |
|---|---|---|---|---|
Age, > 65 years | 485 (52.6) | 235 (63.5) | 250 (45.3) | < 0.001 |
Sex, man | 522 (56.6) | 235 (63.5) | 287 (52.0) | < 0.001 |
Body mass index | 24.1 ± 3.1 | 22.6 ± 1.7 | 24.3 ± 2.2 | 0.713 |
Obese (> 25 kg/m2) | 337 (36.6) | 121 (32.7) | 216 (39.1) | 0.051 |
Underweight (< 18.5 kg/m2) | 23 (2.5) | 13 (3.5) | 10 (1.8) | 0.131 |
Ever smoker | 392 (42.5) | 195 (52.7) | 197 (35.5) | < 0.001 |
Comorbidities | ||||
Hypertension | 412 (44.7) | 206 (55.7) | 206 (37.3) | < 0.001 |
Diabetes | 163 (17.7) | 103 (27.8) | 60 (10.9) | < 0.001 |
Chronic kidney disease | 94 (10.2) | 56 (15.1) | 38 (6.9) | < 0.001 |
COPD | 93 (10.1) | 51 (13.8) | 42 (7.6) | 0.003 |
Preoperative findings | ||||
Respiratory infection(within 1 month) | 370 (40.1) | 12 (3.2) | 4 (0.7) | 0.008 |
Hypoxemia (SpO2 < 96%) | 15 (1.6) | 10 (2.7) | 5 (0.9) | 0.059 |
Laboratory tests | ||||
White blood cell count, /μL | 6,633 ± 2,616 | 6,770 ± 3,535 | 6,541 ± 1745 | < 0.001 |
Hemoglobin, g/dL | 13.2 ± 1.4 | 12,8 ± 1.4 | 13.5 ± 1.3 | 0.128 |
Lymphocyte count, /μL | 2069 ± 701 | 1816 ± 741 | 2,239 ± 617 | < 0.001 |
Albumin, g/dL | 3.7 ± 0.4 | 3.4 ± 0.5 | 3.8 ± 0.2 | < 0.001 |
Cholesterol, mg/dL | 175 ± 39 | 150 ± 37 | 192 ± 31 | < 0.001 |
C-reactive protein, mg/dL | 48.7 ± 38.2 | 52.8 ± 45.1 | 40.8 ± 31.9 | < 0.001 |
Pulmonary function | ||||
FEV1, L | 2.3 ± 0.6 | 2.1 ± 0.5 | 2.3 ± 0.7 | 0.015 |
FEV1, % | 99.1 ± 19.0 | 83.9 ± 15.2 | 94.3 ± 13.9 | 0.112 |
FEV1/FVC, % | 0.7 ± 9.5 | 68.1 ± 11.6 | 65.9 ± 10.2 | 0.034 |
DLco, % | 95.2 ± 18.3 | 83.7 ± 21.5 | 87.1 ± 12.2 | 0.008 |
