Table 1– Baseline characteristics and physiology of patients#
Age yrs66.3±8.1
Sex
 Male81
 Female12
Height cm160.8±8.0
Body weight kg60.4±11.6
BMI kg·m−223.3±3.5
Smoking status
 Current15
 Former59
 Never19
Baseline pulmonary function testing
 FVC L2.37±0.73
 FVC % pred75.0±20.1
 FEV1 L1.93±0.57
 FEV1 % pred85.4±22.1
DL,CO mL·min−1·mmHg−19.19±3.92
DL,CO % pred56.3±20.6
Baseline arterial blood gas values
Pa,O2 mmHg81.0±11.9
Pa,CO2 mmHg39.8±5.3
 pH7.42±0.03
MMRC score
 011
 141
 238
 33
 40
6-min walk test at baseline
 Walk distance m516±96.8
 Lowest Sp,O2 %82.7±9.5
 Borg score4.0±2.1
  • Data are presented as mean±sd or n. BMI: body mass index; FVC: forced vital capacity; % pred: % predicted; FEV1: forced expiratory volume in 1 s; DL,CO: diffusing capacity of the lung for carbon monoxide; Pa,O2: arterial oxygen tension; Pa,CO2: arterial carbon dioxide tension; MMRC: modified Medical Research Council; Sp,O2: arterial oxygen saturation measured by pulse oximetry. #: n = 93 except for DL,CO (n = 90), Pa,O2 (n = 90), Pa,CO2 (n = 90), pH (n = 90) and 6-min walk test variables (n = 92).