Table 3 Association between at-risk GNRI and postoperative complications
|  | Overall cohort (N = 28,762) | PSM cohort (1:1) (N = 14,126) | ||||
|---|---|---|---|---|---|---|
Characteristic | no-risk (18,825) | at-risk (9,937) | P-value | no-risk (7,063) | at-risk (7,063) | P-value |
Heart injury (%) | 332 (1.8) | 372 (3.7) | < 0.001 | 149 (2.1) | 216 (3.1) | < 0.001 |
 Arrhythmia (%) | 223 (1.2) | 225 (2.3) | < 0.001 | 97 (1.4) | 138 (2.0) | 0.009 |
 Heart failure (%) | 44 (0.2) | 73 (0.7) | < 0.001 | 18 (0.3) | 41 (0.6) | 0.004 |
 Myocardial infarction (%) | 40 (0.2) | 48 (0.5) | < 0.001 | 17 (0.2) | 27 (0.4) | 0.174 |
 Cardiac arrest (%) | 25 (0.1) | 26 (0.3) | 0.02 | 17 (0.2) | 10 (0.1) | 0.248 |
AKI (%) | 627 (3.3) | 716 (7.2) | < 0.001 | 323 (4.6) | 383 (5.4) | 0.023 |
AKI Stage (%) |  |  | < 0.001 |  |  | 0.103 |
0 | 18,198 (96.7) | 9221 (92.9) | Â | 6740 (95.5) | 6680 (94.6) | Â |
1 | 489 (2.6) | 570 (5.7) | Â | 258 (3.7) | 304 (4.3) | Â |
2 | 61 (0.3) | 96 (1.0) | Â | 33 (0.5) | 46 (0.7) | Â |
3 | 64 (0.3) | 43 (0.4) | Â | 29 (0.4) | 28 (0.4) | Â |
Pulmonary infection (%) | 2500 (13.3) | 2150 (21.6) | < 0.001 | 1157 (16.4) | 1324 (18.7) | < 0.001 |
Surgical site infection (%) | 515 (2.7) | 565 (5.7) | < 0.001 | 250 (3.5) | 312 (4.4) | 0.009 |
Sepsis (%) | 21 (0.1) | 52 (0.5) | < 0.001 | 12 (0.2) | 24 (0.3) | 0.066 |
Stroke (%) | 112 (0.6) | 59 (0.6) | 1 | 39 (0.6) | 44 (0.6) | 0.66 |
ICU admission (%) | 2198 (11.7) | 2151 (21.6) | < 0.001 | 1039 (14.7) | 1235 (17.5) | < 0.001 |
ICU length of stay (day) | 0.00 [0.00, 0.00] | 0.00 [0.00, 0.00] | < 0.001 | 0.48 (2.05) | 0.65 (5.03) | 0.01 |
Postoperative length of stay (day) | 7.00 [5.00, 10.00] | 9.00[6.00, 12.00] | < 0.001 | 9.43 (10.50) | 10.03 (10.15) | 0.001 |
30-day readmission (%) | 172 (0.9) | 122 (1.2) | 0.014 | 76 (1.1) | 81 (1.1) | 0.748 |
30-day reoperation (%) | 118 (0.6) | 80 (0.8) | 0.096 | 54 (0.8) | 53 (0.8) | 1 |
1-year mortality (%) | 693 (3.7) | 971 (9.8) | < 0.001 | 374 (5.3) | 552 (7.8) | < 0.001 |