It may be subjectively rated on a scale from 1 to 10 with descriptors associated with the number ( The Modified Borg Scale ) .
A number of scales may be used to quantify the degree of shortness of breath .
shortness may be subjectively rated on a scale from 1 to 10 with descriptors associated with the number ( The Modified Borg Scale ) .
A number of scales may be used to quantify the degree of shortness of breath .