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Table 5 Distribution of the 4 main subgroups of IIP in published cohorts

From: Diagnostic approach to interstitial pneumonias in a single centre: report on 88 cases

Author, Country

n

IPF/UIP

NSIP

DIP/RBILD

COP

Our study, Germany

60

45%

23%

15%

17%

Bjoraker 1998, USA[18]

91

69.2%

15.4%

11%

4.4%

Nagai 1998, Japan[19]

111

58%

28%

n.a.

14%

Travis 2000, USA[20]

101

55%

29%

16%

n.a.

Nicholson 2000, UK[21]

78

47%

36%

17%

n.a.

  1. n.a. = not available.