TABLE 1 ] .
Participant Details and Physiologic Data
| Demographic | Patients | Control Subjects |
| Age, y | 68.0 ± 8.2 | 69.1 ± 8.1 |
| Male (female) sex | 15 (26) | 16 (24) |
| IMD score | 12.1 ± 6.8 | 11.7 ± 9.2 |
| BMI, kg/m2 | 28.4 ± 6.7 | 25.2 ± 3.2a |
| MRC breathlessness score (1-5) | 3 (IQR 2-4) | 1 (IQR 1-1)b,c |
| GOLD stage (0-IV) | 2 (IQR 1-3) | … |
| Resting Borg score (1-10) | 0.8 ± 1.1 | 0.06 ± 0.2b |
| Resting Sao2, % | 94.4 ± 2.6 | 96.4 ± 1.3b |
| Resting heart rate, beats/min | 82.8 ± 13.7 | 72.2 ± 11.0b |
| MSWT distance, m | 320 ± 185 | 804 ± 274b |
| Smoking history, pack-y | 40.3 ± 33.3 | 3.1 ± 6.6b |
| FEV1, % predicted | 58 ± 21 | 99 ± 24b |
Data are presented as mean ± SD, No., or median (IQR). GOLD = Global Initiative for Chronic Obstructive Lung Disease; IMD = English Indices of Deprivation, 2010 data; IQR = interquartile range; MRC = Medical Research Council; MSWT = modified shuttle walk test; Sao2 = oxygen saturation as measured by pulse oximetry.
a
P < .01.
b
P < .001.
c
Mann-Whitney-Wilcoxon test.