Table 1 MRC dyspnea score (0 to 5 scale) [20]

0

I only get breathless with strenuous exercise

1

I get short of breath when hurrying on level ground or walking up a slight hill

2

On level ground, I walk slower than people of the same age because of breathlessness

3

On level ground, I have to stop for breath when walking at my own pace

4

I stop for breath after walking about 100 m or after 5 min on level ground

5

I am too breathless to leave the house or I am breathless when dressing