From: Plasma YKL-40 and all-cause mortality in patients with chronic obstructive pulmonary disease
 | Adjusted hazard ratio | 95% Confidence interval | p-value |
---|---|---|---|
High vs. normal plasma YKL-40** | 1.38 | 1.11 - 1.72 | 0.004 |
Age* | 1.05 | 1.03 - 1.06 | <0.0001 |
Neutrophils†| 1.05 | 1.01- 1.08 | 0.01 |
Moderate COPD‡ | Ref. Value | Ref. Value | Ref. Value |
Severe COPD‡ | 1.35 | 1.03 - 1.76 | 0.03 |
Very severe COPD‡ | 2.19 | 1.60 - 2.99 | <0.0001 |
Pack years > 40 | 1.38 | 1.11- 1.71 | 0.003 |