Figure 3From: Neutrophil-to-lymphocyte ratio, calprotectin and YKL-40 in patients with chronic obstructive pulmonary disease: correlations and 5-year mortality – a cohort study Kaplan-Meier survival estimates for each biomarker in the group not treated with systemic glucocorticoids. Calprotectin dichotomized at median (135.5 ng/mL). NLR dichotomized at median (2.83). Neutrophil count dichotomized at upper limit of reference value (7 × 109/L). Lymphocyte count dichotomized at lower limit of reference value (1.3 × 109/L). YKL-40 dichotomized at 75th age corrected percentile. NLR: Neutrophil-to-lymphocyte ratio.Back to article page