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Table 2 Correlation between serum YKL-40 levels and clinical parametersa

From: YKL-40 expression in chronic obstructive pulmonary disease: relation to acute exacerbations and airway remodeling

Parameters

Serum YKL-40

Stable (n = 44)

Exacerbation (n = 37)

All (n = 81)

r s

P value

r s

P value

r s

P value

FEV1, % of predicted

−0.399

0.007

−0.440

0.006

−0.442

<0.001

FEV1/FVC, %

−0.156

0.356

−0.01

0.944

−0.201

0.072

CRP, mg/L

0.507

<0.001

0.624

<0.001

0.601

<0.001

PaO2, mmHg

−0.349

0.020

−0.60

<0.001

−0.556

<0.001

PaCO2, mmHg

0.018

0.917

0.087

0.573

0.185

0.098

  1. aSpearman’s rank order method. FEV 1 forced expiratory volume in 1 s, FVC forced vital capacity, CRP C reactive protein, PaO 2 arterial partial oxygen pressure, PaCO 2 arterial partial carbon dioxide pressure
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Respiratory Research

ISSN: 1465-993X

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