Traister et al reported a simple score for distinguishing vocal cord dysfunction from asthma. The authors are from the University of Pittsburgh.
Parameters:
(1) dysphonia
(2) wheezing
(3) throat tightness
(4) triggered by odors
|
Parameter
|
Finding
|
Points
|
|
dysphonia
|
absent
|
0
|
|
|
present
|
2
|
|
wheezing
|
absent
|
2
|
|
|
present
|
0
|
|
throat tightness
|
absent
|
0
|
|
|
present
|
4
|
|
triggered by odors
|
absent
|
0
|
|
|
present
|
3
|
total score =
= SUM(points for all 4 parameters)
Interpretation:
• minimum score: 0
• maximum score: 11
• The higher the score the greater the probability of vocal cord dysfunction.
|
Score
|
Probability of Vocal Cord Dysfunction
|
|
0
|
8%
|
|
2
|
34%
|
|
3
|
57%
|
|
4
|
77%
|
|
5
|
89%
|
|
6
|
95%
|
|
7
|
98%
|
|
8
|
99%
|
|
9
|
99.7%
|
|
11
|
99.95%
|
Performance:
• The area under the ROC curve is 0.94.
