Prognostic Value of C-Reactive Protein, Leukocytes, and Vitamin D in Severe Chronic Obstructive Pulmonary Disease

Table 1

Variables and point allocation used for the computation of the i-BODE index.

Variable	0 points	1 point	2 points	3 points
FEV1 predicted	≥65	50–64	36–49	≤35
Distance walked on ISWT (m)	≥250	150–249	80–149	<80
MRC dyspnoea grade	1-2	3	4	5
BMI (kg/m^2)	>21	≤21