Table 2.
Main differences between the population in which the 2008 score was developed and the present population. All p ≤ 0.001
| Variable | Present population | 2008 population |
|---|---|---|
| Sex, % women | 23.2 | 30.0 |
| Age (years, mean ± SD ) | 70.3 ± 11.3 | 72.5 ± 11.8 |
| Smoking status, % | ||
| ●Non smoker | 6.6 | 19.3 |
| ●Ex smoker | 60.8 | 49.9 |
| ●Smoker | 32.6 | 30.8 |
| MRC dyspnea grade at steady state, % | ||
| ●0/1 | 17.1 | 22.5 |
| ●2-3 | 69.9 | 46.2 |
| ●4 | 13.0 | 31.3 |
| Maintenance treatment, % | ||
| ●LTOT | 37.7 | 23.2 |
| ●Inhaled corticosteroids | 72.4 | 43.8 |
| ●Oral corticosteroids | 7.8 | 13.8 |
| ●Bronchodilators | 86.6 | 69.6 |
| Clinical signs of severity, % | ||
| ●Cyanosis | 22.1 | 29.0 |
| ●Use of accessory inspiratory muscles | 27.9 | 50.9 |
| ●Paradoxical abdominal movement | 8.6 | 36.8 |
| ●Asterixis | 1.8 | 7.8 |
| ●Neurological impairment | 6.9 | 11.8 |
| ●Lower limb edema | 13.3 | 23.3 |
| Number of clinical signs of severity, % | ||
| ●None | 44.1 | 27.6 |
| ●1 -2 | 45.9 | 47.7 |
| ● ≥ 3 | 10.0 | 24.7 |
| Mortality (%) | 2.5 | 7.9 |