Table 1.
Patients’ characteristics.
| Variable | 0 Months | 6 Months |
|---|---|---|
| Total, n | 61 | 61 |
| Age, y | 70.1 ± 7.9 | |
| Sex, female, n (%) | 7 (11.5%) | |
| Never smoker, n (%) | 12 (19.7%) | |
| Ex-smoker, n (%) | 44 (72.1%) | |
| Current smoker, n (%) | 5 (8.2%) | |
| Smoking history, pack-years | 38.0 (15.0–56.0) | |
| Body mass index, kg/m2 | 23.6 ± 3.3 | |
| Histological diagnosis, n (%) | 9 (14.8%) | |
| FVC, L | 2.73 (1.87–3.26) | 2.68 (1.85–3.25) |
| FVC, % predicted | 83.7 (69.4–92.5) | 81.6 (69.0–93.2) |
| PEFR, L/s | 7.19 (5.50–8.42) | 6.68 (5.30–8.52) |
| PEFR, % predicted | 81.2 (70.2–92.6) | 77.0 (64.5–94.3) |
| FEV1, L | 2.18 (1.66–2.60) | 2.13 (1.53–2.59) |
| FEV1, % predicted | 82.2 (74.5–91.7) | 81.6 (68.3–92.2) |
| FEV1/FVC, % | 83.0 (77.1–87.6) | 81.6 (76.1–86.4) |
| MMF, L | 2.29 (1.59–3.05) | 2.15 (1.52–2.96) |
| MMF, % predicted | 82.5 (57.8–103.1) | 77.4 (53.2–97.9) |
| DLCO, % predicted a | 73.0 (54.8–85.8) | |
| ESMCSA, cm2b | 29.1 ± 6.4 |
Data are presented as means (± standard deviation), medians [interquartile range], or numbers (%).
FVC: forced vital capacity; PEFR: peak expiratory flow rate; FEV1: forced expiratory volume in 1.0 s; MMF: maximum mid-expiratory flow rate; DLCO: diffusion capacity of the lung for carbon monoxide; ESMCSA; the cross-sectional area of the erector spinae muscle evaluated using computed tomography images.
aTwo patients could not perform the DLCO maneuver.
bNine cases could not be evaluated.