Table 1

Baseline demographic data and clinical characteristics of patients

CharacteristicAll patients mean±SD
Age, years67.82±10.01
BMI, kg/m²19.63±4.10
SpO2, %90.31±4.25
PH7.40±0.03
PaCO2, mm Hg56.93±3.23
PaO2, mm Hg67.62±9.86
FVC, L1.63±0.71
FVC, % predicted50.51±15.65
FEV1, L0.53±0.21
FEV1, % predicted24.21±6.60
FEV1/FVC, %36.75±8.83
Mean daily use of ventilator (h/day)6.1±2.3
  • Data are mean±SD unless otherwise stated.

  • BMI, body mass index; FEV1, forced expiratory volume in 1 s; FVC, forced vital capacity; PaCO2, arterial carbon dioxide pressure; PaO2, arterial oxygen pressure; SpO2, arterial oxygen saturation.