IPF	With emphysema	Without emphysema	p
N	21	35
Age t0 (years)	65.9±9.3	65.3±11.8
Tobacco use	15 (71%)	24 (69%)
History of respiratory hospitalization	5 (24%)	9 (26%)
FVC t0 (% pv)	86.75±18.4	72.62±20.6	0.02
TLC t0 (% pv)	86.6±17.2	72.0±15.0	0.004
FVC t6 - t0 (%)	-1.24±20.1	-0.04±11.4	NS
Du Bois score	14.6±14.0	18.0±13.9	NS