Table 1 Baseline characteristics
Characteristic | Value |
|---|---|
Male sex | 481 (77.2%) |
Age, years | 69.6 ± 8.7 |
Body mass index, kg/m2 | 27.5 ± 4.1 |
Underweight | 4 (0.6%) |
Normal weight | 167 (26.8%) |
Overweight | 305 (49.0%) |
Obesity | 147 (23.6%) |
Age at first symptom onset, years | 65.8 ± 10.1 |
Age at IPF diagnosis, years | 67.6 ± 9.6 |
Duration since first symptoms, years | 3.6 ± 4.0 |
Disease duration, years | 2.0 ± 3.3 |
Disease duration of less than 6 months | 242 (38.8%) |
Smoking status | |
Never | 237 (38.0%) |
Former | 376 (60.4%) |
Current | 10 (1.6%) |
Gastro-oesophageal reflux | 192 (30.8%) |
Emphysema | 55 (8.8%) |
Genetic predisposition | 31 (5.0%) |
Six-minute walk distance, meters | 272.4 ± 196.1 |
% FVC | 67.5 (±17.8) |
% FEV1 | 75.3 (±19.4) |
% DLCO | 35.6 (±17.0) |
Long term oxygen use | 201 (32.3%) |
GAP index | |
Stage I | 87 (20.2%) |
Stage II | 238 (55.2%) |
Stage III | 106 (24.6%) |