Table 1 Salient clinical features of patients with IIPs

No. of patients

43

19

17

Age, years *

61.6 ± 8.8

63.6 ± 10.0

59.0 ± 8.6

Sex, M/F

29/14

13/6

11/6

%VC before biopsy (%)*

82.5 ± 16.6

77.8 ± 17.2

84.8 ± 17.5

PaO2 before biopsy (torr)*

77.5 ± 9.9

80.7 ± 9.8

73.7 ± 9.8

Duration of illness before biopsy (months)*

17.4 ± 21.3

13.8 ± 13.7

21.8 ± 25.1

Duration of follow up after biopsy (months)*

41.8 ± 29.6

27.3 ± 21.7

46.8 ± 21.6