Mean (SD) differences in demographic data and lung function tests between healthy controls (HC) and patients with chronic heart failure (CHF)
| HC | CHF | p value | HC − CHF (95% CI) | |
|---|---|---|---|---|
| BMI = body mass index; % pred = percentage predicted; FEV1 = forced expiratory volume in 1 second; FVC = forced vital capacity; TLC = total lung capacity; RV = residual volume; FRC = functional residual capacity; 95% CI = 95% confidence intervals. | ||||
| 95% confidence intervals and p values refer to the differences observed between the absolute values | ||||
| Age (years) | 54.0 (20.1) | 62.6 (13.4) | 0.3 | −8.6 (−24.7 to 7.5) |
| BMI (kg/m2) | 23.7 (5.4) | 26.8 (1.9) | 0.1 | 3.1 (−0.8 to 7.0) |
| FEV1 (l) | 3.7 (1.1) | 2.7 (0.7) | 0.1 | 0.9 (−0.1 to 2.0) |
| FEV1 (% pred) | 107.8 (18.4) | 86.2 (21.4) | ||
| FVC (l) | 4.8 (1.4) | 3.7 (0.9) | 0.1 | 1.1 (−0.3 to 2.4) |
| FVC (% pred) | 112.6 (19.1) | 91.2 (18.9) | ||
| FEV1/FVC | 76.7 (7.5) | 74.8 (9.7) | 0.7 | 1.9 (−7.4 to 11.1) |
| TLC (l) | 7.0 (1.7) | 6.3 (1.6) | 0.5 | 0.7 (−1.3 to 2.6) |
| TLC (% pred) | 102.4 (6.8) | 92.4 (16.7) | ||
| RV (l) | 2.0 (0.2) | 2.3 (0.8) | 0.3 | −0.3 (−1.0 to 0.4) |
| RV (% pred) | 99.1 (18.1) | 97.7 (22.4) | ||
| FRC (l) | 3.6 (1.0) | 3.3 (1.1) | 0.7 | 0.2 (−1.0 to 1.5) |
| FRC (% pred) | 105.1 (18.7) | 94.3 (26.3) | ||