Table 2 Baseline variables distributed according to plasma concentrations of YKL-40
From: Plasma YKL-40 and all-cause mortality in patients with chronic obstructive pulmonary disease
| Â | < 75% percentile (n = 322) | > 75% percentile (n = 171) | p-value |
|---|---|---|---|
Age at index date‡ | 70 (65–75) | 72 (66–76) | 0.16 |
Charlson score‡* | 1 (1–2) | 1 (1–3) | 0.02 |
Smoking (years)‡ | 37 (26–50) | 40 (28–55) | 0.13 |
Neutrophils (x10^9/L)‡ | 6.2 (4.7-8.0) | 6.3 (4.9-8.9) | 0.18 |
FVC (L)‡ | 2.00 | 1.91 | 0.09 |
FEV 1 (L)‡ | 0.89 (0.69-1.15) | 0.91 (0.69-1.13) | 0.72 |
FEV1 predicted (%)‡ | 37.69 (29.73-47.25) | 40.68 (31.03-49.67) | 0.23 |
BMI‡ | 24.20 (21.04-27.83) | 24.01 (20.08-27.24) | 0.20 |
Present smokers§ (%) | 120 (37) | 76 (44) | 0.12 |
Male gender†§ (%) | 164 (51) | 83 (49) | 0.61 |
Randomization azithromycin§ (%) | 164 (51) | 84 (49) | 0.70 |