Table 1 Characteristics of patients
From: Maximal respiratory static pressures in patients with different stages of COPD severity
| Â | CONTROL GROUP | MILD | MODERATE | SEVERE | p VALUE* | COPD PATIENTS |
|---|---|---|---|---|---|---|
N° | 21 | 31 | 39 | 28 |  | 98 |
Age | 67 ± 5 | 67 ± 8 | 71 ± 6 | 72 ± 7 | p > 0.05 | 70 ± 8 |
Body weight (Kg) | 72 ± 6 | 76 ± 11 | 78 ± 12 | 75 ± 20 | p > 0.05 | 77 ± 15 |
Body height (cm) | 165 ± 8 | 168 ± 9 | 166 ± 8 | 167 ± 6 | p > 0.05 | 167 ± 8 |
MIP (cmH 2 O) | 99 ± 18 | 84 ± 22 | 80 ± 34 | 65 ± 20 | p = 0.0002 | 77 ± 28 |
MEP (cmH 2 O) | 102 ± 26 | 93 ± 29 | 90 ± 32 | 75 ± 21 | p = 0.01 | 89 ± 31 |
FEV 1 (L) | 2.7 ± 0,5 | 2.4 ± 0,6 | 1.5 ± 0.4 | 0.9 ± 6.3 | p < 0.0001 | 1.7 ± 0.7 |
FEV 1 % | 102 ± 12 | 91 ± 11 | 65 ± 8 | 38 ± 7 | p < 0.0001 | 65 ± 22 |
FVC (L) | 3.3 ± 0.9 | 3.2 ± 0.8 | 2.4 ± 0.7 | 1.9 ± 0.6 | p < 0.0001 | 2.5 ± 0.9 |
FVC % | 101 ± 12 | 96 ± 9 | 76 ± 10 | 59 ± 14 | p < 0.001 | 77 ± 18 |
PEF (L/sec) | 6.5 ± 2 | 6.6 ± 1.6 | 4.9 ± 1.7 | 3.1 ± 1.2 | p < 0.0001 | 4.9 ± 2 |
PEF % | 102 ± 12 | 91 ± 15 | 71 ± 18 | 45 ± 15 | p < 0.0001 | 70 ± 24 |
TLC (L) | 4.9 ± 1.3 | 5.9 ± 1.1 | 5.4 ± 1.3 | 5.6 ± 1.4 | p = 0.037 | 5.7 ± 1.3 |
TLC % | 98 ± 20 | 98 ± 13 | 94 ± 14 | 97 ± 18 | p = 0.0007 | 97 ± 16 |
RV (L) | 2 ± 0.5 | 2.5 ± 0.7 | 3 ± 0.8 | 3.9 ± 1.2 | p < 0.0001 | 3 ± 1 |
RV % | 97 ± 20 | 111 ± 29 | 124 ± 32 | 151 ± 47 | p < 0.0001 | 128 ± 39 |
RV/TLC % | 40 ± 20 | 41 ± 11 | 50 ± 20 | 66 ± 23 | p < 0.0001 | 49.7 ± 19 |