Table 2.

Comparison of the baseline NLR stratified by the GOLD COPD grade

GOLD COPD grade	NLR
1	1.9 (1.4–2.4)
2	2.1 (1.5–2.6)
3	2.3 (2.0–3.0)*
4	2.7 (1.9–5.3)

Data are shown as median (interquartile range). P-values among the four groups; p = 0.002, *p = 0.008 vs. grade 1

GOLD Global Initiative for Chronic Obstructive Lung Disease, COPD chronic obstructive pulmonary disease, NLR Neutrophil-to-Lymphocyte ratio