Table 2 Functional and Quality of Life Measurements (n = 300)

6-min walk test–Median [IQR]

 6MWD (m)

505 [441.5–576.8]

 Distance Saturation Product (m%)

479.8 [427.7–555.8]

St. George’s Respiratory Questionnaire–Median [IQR]

 Total Score

30 [15.8–48.2]

 Symptom Score

44.5 [30.4–62.3]

 Activity Score

36.4 [13–59.5]

 Impact Score

23.3 [10.3–38.2]

Dyspnea Scale

 Grade 1

132 (44)

 Grade 2

100 (33)

 Grade 3

32 (11)

 Grade 4

3 (1)

 Grade 5

3 (1)

Pulmonary Symptom Severity Score–Median [IQR]

 Frequency

9 [5.2–11]

 Severity

6 [4–8]