Table 3.
Study parameters upon stratification by NLR value.
| Parameter | NLR ≥ 13.2 n = 25 (9.09%) |
NLR < 13.2 n = 250 (90.91%) |
P-value |
|---|---|---|---|
| Age (years), mean (SD) | 70.24 (10.83) | 69.34 (9.47) | 0.66 |
| Male, n (%) | 14 (56) | 138 (55.2) | 0.94 |
| Active smoker, n (%) | 13 (52) | 89 (35.6) | 0.11 |
| Length of hospitalizationc (days), median (IQR) | 10 (7–12.5) | 7 (5–10) | 0.05 |
| Character of ECOPD | |||
| Infectious, n (%) | 17 (68) | 129 (51.6) | 0.12 |
| CRP (mg/l), median (IQR) | 17.34 (8.92–22.6) | 10.73 (3.37–25.31) | 0.5 |
| WBC (× 103/μl), median (IQR) | 11.9 (10.86–16) | 9.13 (7.68–12) | < 0.0001 |
| Eosinophils (× 103/μl), median (IQR) | 0.01 (0–0.02) | 0.1 (0.03–0.21) | < 0.0001 |
| Hemoglobin (g/dl), median (IQR) | 14.1 (13–14.9) | 14 (12.8–15.18) | 0.83 |
| pH, median (IQR) | 7.42 (7.37–7.43) | 7.42 (7.39–7.45) | 0.12 |
| pCO2 (mmHg), median (IQR) | 42.3 (35.8–52.4) | 38.7 (35–44.5) | 0.2 |
| pO2 (mmHg), median (IQR) | 59.3 (54–65.1) | 63.3 (55.4–73.1) | 0.08 |
| SaO2 (%), median (IQR) | 90 (86–92.7) | 92.7 (89.4–95.1) | 0.008 |
| HCO3− (mEq/l), median (IQR) | 26.75 (24.03–29.55) | 25.2 (23.35–28.1) | 0.31 |
| BE (mEq/l), median (IQR) | 1.6 (− 1.18 to 4.5) | 1 (− 0.6 to 2.9) | 0.78 |
| Comorbidities | |||
| Ischemic heart disease, n (%) | 9 (36) | 77 (30.8) | 0.59 |
| AFa, n (%) | 6 (24) | 25 (10) | 0.05 |
| Arrhythmia other than AFb, n (%) | 0 (0) | 8 (3.2) | 1.0 |
| Congestive heart failure, n (%) | 14 (56) | 102 (40.8) | 0.14 |
| Arterial hypertension, n (%) | 13 (52) | 166 (66.4) | 0.15 |
| Type 2 diabetes, n (%) | 4 (16) | 62 (24.8) | 0.33 |
| Others, n (%) | 15 (60) | 137 (54.8) | 0.62 |
AF atrial fibrillation, CRP c-reactive protein, IQR interquartile range, WBC white blood count.
aFirst detected in the admission, paroxysmal, persistent or permanent.
bIn the admission or in the past medical history.
cAmong survivors.