Patient characteristics

Age years74 (48–92)
Men161 (66%)
Duration of IPF years3.4±2.4
Education years10±4
Working21 (9%)
Smoking status
 Smoker24 (10%)
 Ex-smoker105 (43%)
 Never-smoker116 (47%)
FVC# L3.0±0.9
FVC# % pred83±17
 Hypertension101 (41%)
 Coronary heart disease53 (22%)
 Diabetes47 (19%)
 Cardiac insufficiency44(18%)
 COPD41 (17%)
 Cancer41 (17%)
 Asthma24 (10%)
 Others38 (16%)
 No comorbidities48 (20%)
RAND-36 domains
 Physical functioning47±29
 Physical role function31±39
 Bodily pain65±27
 General health39±18
 Social role function73±27
 Emotional role function51±42
 Mental health72±20

Data are presented as mean (range), n (%) or mean±sd. #: FVC was recorded at the time of the diagnosis.

IPF: idiopathic pulmonary fibrosis; FVC: forced vital capacity; RAND-36: RAND 36-Item Health Survey.