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Table 1 Classification of subgroups defined by clinical and physiologic indicators of less-advanced disease or advanced disease at baseline

From: Health-related quality of life and symptoms in patients with IPF treated with nintedanib: analyses of patient-reported outcomes from the INPULSIS® trials

Clinical measure

Subgroup with less-advanced disease

Subgroup with advanced disease

GAP stage

I

II/III

% predicted FVC, %

>  80

≤ 80

% predicted DLCO, %

>  40

≤ 40

CPI

≤ 45

>  45

SGRQ total score

≤ 40

>  40

  1. CPI composite physiologic index, DLCO diffusing capacity of the lung for carbon monoxide, FVC forced vital capacity, GAP gender, age and physiology, SGRQ St George’s respiratory questionnaire