Table 2.
Variable | Log Rank Test | |||
---|---|---|---|---|
Mean Survival Time (Months) | χ2 | P value | ||
COPD | Yes | 37.00 | 34.94 | <0.001 |
No | 129.98 | |||
Age | ≥ 60 years | 80.84 | 14.75 | <0.001 |
< 60 years | 137.31 | |||
Gender | Male | 91.85 | 6.73 | 0.009 |
Female | 134.00 | |||
Smokers | Yes | 72.21 | 15.77 | <0.001 |
No | 134.63 | |||
Neutrophil | ≥4.4 × 109/L | 92.00 | 7.06 | 0.008 |
<4.4 × 109/L | 134.78 | |||
CRP | ≥11.56mg/L | 73.53 | 13.83 | <0.001 |
<11.56mg/L | 133.33 | |||
NLR | ≥3.76 | 76.64 | 7.44 | 0.006 |
<3.76 | 131.52 | |||
PEF | ≥2.91L/s | 120.65 | 9.03 | 0.003 |
<2.91L/s | 71.06 | |||
PEF% | ≥41.55% | 120.87 | 10.16 | 0.001 |
<41.55% | 68.25 | |||
DLCO% | ≥72.85% | - | 7.97 | 0.005 |
<72.85% | 82.96 | |||
DLCO/VA | ≥1.235mmol/min/kPa/L | 131.00 | 18.35 | <0.001 |
<1.235mmol/min/kPa/L | 60.04 |
Abbreviations: COPD, Chronic Obstructive Pulmonary Disease; CRP, C-reactive protein; DLCO, Diffusion capacity of carbon monoxide; VA, Alveolar volume; NLR, Neutrophil-to-lymphocyte ratio; PEF, Peak expiratory flow percentage.