Characteristics of the study patients
| COPD group (n=30) | Non-COPD group (n=261) | p Value | |
|---|---|---|---|
| Age | 70.9±8.1 | 64.4±11.9 | <0.04 |
| Sex (men/women) | 14/16 | 73/188 | <0.03 |
| Height (cm) | 158.2±10.9 | 157.2±7.91 | 0.67 |
| Weight (kg) | 55.3±10.2 | 56.9±10.9 | 0.46 |
| BMI (kg/m2) | 0.22±0.03 | 0.21±0.02 | 0.20 |
| FVC (L) | 2.64±0.95 | 2.92±0.74 | 0.14 |
| %VC (%) | 93.6±16.7 | 106±17.6 | <0.00 |
| FEV1 (L) | 1.6±0.62 | 2.22±0.57 | <0.00 |
| FEV1/FVC% (%) | 63.2±6.1 | 83.8±25.2 | <0.00 |
| IPAG score | 22.1±3.6 | 16.9±4.9 | <0.00 |
| Smoking status (smoker+ex-smoker/ non-smoker/passive smoker) | (14/10/6) | (75/121/65) | <0.04 |
| BI | 474.65±560.9 | 96.81±267.74 | <0.00 |
Values are presented as mean±SD.
Differences in sample characteristics were analysed for significance using the Mann-Whitney U test and Cochran-Armitage test.
%VC, per cent vital capacity; BMI, body mass index; COPD, chronic obstructive pulmonary disease; FEV1, forced expiratory volume in 1 s; FVC, forced vital capacity; GOLD, Global Initiative for Chronic Obstructive Lung Disease; IPAG, International Primary Care Airways Group.