Table 1.
Anthropometric characteristics and respiratory function data of normal subjects and COPD patients.
| Parameters | Normal subjects (n = 10) | COPD patients (n = 35) | P value |
|---|---|---|---|
| Age, (yrs) | 55 (5) | 59 (7) | NS |
| Gender, M/F | 8/2 | 26/9 | NS |
| Ht, (m) | 1.7 (0.05) | 1.7 (0.07) | NS |
| Wt, (kg) | 78 (8) | 77 (14) | NS |
| Wt, (% pred) | 109 (10) | 106 (15) | NS |
| BMI | 27.4 (2.7) | 26.5 (3.7) | NS |
| FVC, (% pred) | 105 (12) | 86 (20) | P = 0.007 |
| FEV1, (% pred) | 100 (11) | 45 (22) | P < 0.001 |
| FEV1/FVC, % | 77 (4) | 40 (14) | P < 0.001 |
| IC, (% pred) | 103 (18) | 81 (17) | P < 0.001 |
| TLC, (% pred) | 93 (8) | 100 (15) | NS |
| FRC, (% pred) | 89 (12) | 120 (0.0) | P = 0.002 |
| RV, (% pred) | 74 (14) | 123 (42) | P < 0.001 |
| DLCO, (% pred) | 103 (12) | 60 (22) | P < 0.001 |
| PaO2 (mm Hg) | 77 (12) | ||
| PaCO2 (mm Hg) | 41 (6) | ||
| SpO2 % | 98 (97–99) | 95 (94–96) | P < 0.001 |
| IQ (% ile) | 90 (75–95) | 80 (63–95) | NS |
Values are mean (SD) or median (range).
Abbreviations: Ht: height; Wt: weight; BMI: body mass index; SpO2 %: arterial oxygen saturation measured with pulse arterial oximeter; IQ: intelligent quotient; P ≤ 0.05, statistically significant; NS: nonsignificant.