mMRC Dyspnea Scale

0: I only get breathless with strenuous exercise. 1: I get short of breath when hurrying on the level or walking up a slight hill. 2: I walk slower than people of the same age on the level because of breathlessness, or I have to stop for breath when walking at my own pace. 3: I stop for breath after walking about 100 yards or after a few minutes on the level. 4: I am too breathless to leave the house or I am breathless when dressing or undressing.