From: No evidence for WU polyomavirus infection in chronic obstructive pulmonary disease
Variables | All | AE-COPD | Stable COPD | P valuea | |||
---|---|---|---|---|---|---|---|
 | n | % | n | % d | n | % d |  |
Patients | 189 | 100 | 123 | 65.1 | 66 | 34.9 | Â |
 | n | % e | n | % e | n | % e |  |
Sex | Â | Â | Â | Â | Â | Â | 0.35 |
   Female | 39 | 20.6 | 28 | 22.8 | 11 | 16.7 |  |
   Male | 150 | 79.4 | 95 | 77.2 | 55 | 83.3 |  |
Smoking behavior | Â | Â | Â | Â | Â | Â | 0.34 |
   Active smokers | 53 | 28.0 | 32 | 26.0 | 21 | 31.8 |  |
   Non-smoker | 26 | 13.8 | 20 | 16.3 | 6 | 9.1 |  |
   Ex-smoker | 110 | 58.2 | 71 | 57.7 | 39 | 59.1 |  |
Oral steroid medication | Â | Â | Â | Â | Â | Â | 0.52 |
   Yes | 127 | 67.2 | 85 | 69.1 | 42 | 63.6 |  |
   No | 62 | 32.8 | 38 | 30.9 | 24 | 36.4 |  |
Inhaled corticosteroids | Â | Â | Â | Â | Â | Â | 0.63 |
   Yes | 126 | 66.7 | 80 | 65.0 | 46 | 69.7 |  |
   No | 63 | 33.3 | 43 | 35.0 | 20 | 30.3 |  |
 | Mean | SD | Mean | SD | Mean | SD |  |
Age (years) | 67 | 10 | 68 | 9 | 65 | 11 | 0.17 |
Body mass index (kg/m2) | 26.9 | 5.1 | 26.8 | 5.0 | 27.2 | 5.2 | 0.60 |
 | Median | Range | Median | Range | Median | Range |  |
Pack yearsb | 30 | 2-120 | 30 | 2-120 | 30 | 2-120 | 0.71 |
FEV1ad (L) | 1.0 | 0.4-2.6 | 1.0 | 0.4-2.2 | 1.2 | 0.5 - 2.6 | < 0.0001 |
FEV1ad (% predicted) | 38.0 | 16.7-79.0 | 36.7 | 16.7-79.0 | 42.9 | 19.4-77.3 | 0.003 |
FEV1dis (L) | 1.2 | 0.5-2.9 | 1.2 | 0.6-2.9 | 1.2 | 0.5-2.6 | 0.53 |
FEV1dis (% predicted) | 43.6 | 18.5-78.9 | 44.3 | 18.5-78.9 | 42.9 | 19.4-77.3 | 0.90 |
CRP (mg/dL) | 0.8 | 0.0-39.8 | 1.0 | 0.0-39.8 | 0.6 | 0.0-12.9 | 0.0002 |
Leukocytes/nL | 10.5 | 0.7-27.2 | 10.9 | 0.7-27.2 | 10.1 | 5.1-24.0 | 0.016 |
Oral steroid dose (mg)c | 7.5 | 0-150 | 10 | 0-150 | 5 | 0-150 | 0.098 |