Table 2.
Preoperative neutrophil-to-lymphocyte ratio characteristics
| Type of surgery NLR - Median (IQR) | Survivors | Deceased | P value |
|---|---|---|---|
| Neutrophil-to-Lymphocyte Ratio (NLR) | |||
| Intraperitoneal | 5.7 (3.3 - 9.5) | 10.0 (5.6 - 14.7) | <0.0001 |
| Vascular | 6.0 (2.8 - 9.8) | 4.5 (3.4 - 5.2) | 0.8535 |
| Trauma | 4.4 (3.1 - 8.8) | 4.5 (3.4 - 5.2) | 0.7759 |
| Urological | 6.8 (3.7 - 11.25) | 15.2 (5.0 - 25.2) | 0.1916 |
| Neurological | 4.1 (2.3 - 10.8) | 5.3 (3.6 - 10.1) | 0.2943 |
| Superficial | 3.7 (2.5 - 8.2) | - | - |
| Head and Neck | 4.3 (2.6 - 10.0) | - | - |
| Intrathoracic | 7.44 (2.4 - 20.7) | 12.8 (10.1 - 21.3) | 0.4606 |
| 30 days mortality | |||
| NLR - Median (IQR) | 5.8 (3.2-10.26) | 8.7 (3.9-12.6) | 0.0302 |
| Range | 48.1 | 46.0 | |
| NLR < 65 years - Median (IQR) | 5.1 (2.9-8.9) | 10.6 (6.8-16.2) | 0.0064 |
| Range | 47.8 | 20.1 | |
| NLR ≥ 65 years - Median (IQR) | 6.8 (3.9-12.1) | 6.7 (3.7-11.0) | 0.9068 |
| Range | 47.6 | 46.0 | |
| 180 days mortality | |||
| NLR - Median (IQR) | 5.6 (3.1-9.8) | 8.8 (4.8-14.5) | <0.0001 |
| Range | 48.1 | 46.5 | |
| NLR < 65 years - Median (IQR) | 4.9 (2.8- 8.8) | 9.3 (5.4-14.9) | 0.0002 |
| Range | 47.8 | 27.8 | |
| NLR ≥ 65 years - Median (IQR) | 6.6 (3.7-11.8) | 8.6 (4.3-13.1) | 0.0991 |
| Range | 47.6 | 46.5 | |
| Sex - 180 days mortality | |||
| NLR Female | 5.1 (2.7-8.8) | 8.6 (4.4-12.7) | 0.0006 |
| NLR Male | 6.1 (3.4-10.2)a | 9.1 (4.8-14.7)b | 0.0029 |
The table shows the difference in Neutrophil to Lymphocyte Ratio between survivors and deceased. Differences between types of surgery are described. Both the distribution of NLR is observed for mortality at 30 and 180 days for the total number of patients and in those older and younger than 65 years of age. P-value of 0.05 is considered significant
Female and Male Mann–Whitney U test: a0.006, b0.8395