Table 1: Demographics and clinical characteristics of the study population.
| Parameters | Moderate COPD (n = 35) | Severe COPD (n = 52) | Very severe COPD (n = 38) | p value |
| Age (years) | 57.7 ± 12.01 | 59.9 ± 9.8 | 56.6 ± 8.9 | 0.28 |
| Smoking index | 120.0 (30.0 - 3000.0) | 304.0 (20.00 - 2000.0) | 312.0 (117.0 - 3000.0) | 0.62 |
| Exercise capacity | ||||
| 6-minute walk test (meters) | 424.9 ± 118.9 | 334.7 ± 121.02 | 322.1 ± 89.98 | 0.001* |
| Anthropometry | ||||
| BMI (kg/m2) | 22.1 ± 4.9 | 21.1 ± 3.78 | 20.4 ± 4.1 | 0.22 |
| Mid upper arm circumference (cms) | 25.1 ± 3.5 | 24.5 ± 3.4 | 23.03 ± 3.14 | 0.006* |
| Sum of four skin fold thickness (mm) | 42.2 (17.0 - 133.0) | 48.9 (11.0 - 75.0) | 31.8 (30.0 - 90.0) | 0.02* |
| Waist/Hip ratio | 0.90 ± 0.08 | |||
All values expressed as Mean ± SD or Median (min - max); *: Statistically significant.