Table 1. Patient characteristics.

Number of patients (N)	50
Gender (F/M)	21 (42%) / 29 (58%)
Age	61 ± 9.8 (43–81)
Smoking status (never/former/current)	20 (40%) / 19 (38%) / 11 (22%)
BMI	29.6 ± 2.9 (23.3–36)
SpO2	94.3 ± 14 (92–98)
FEV1 predicted %	65.1 ± 7.7 (48–81)
FVC predicted %	69.7 ± 7.9 (52–85)
DLCO predicted %	63.1 ± 8.1 (47–78)
PASP mm Hg *	24.6 ± 5.1 (18–34)

Results presented as mean ± SD with range in parenthesis or N cases with percentage in parenthesis, according to data format (numeric or descriptive respectively).

* Assessed in 24 patients with Echo Doppler ultrasonography