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Efficiency and cutoff values of the Voice Activity and Participation Profile for nonteachers and teachers.

PURPOSE
To identify the efficiency characteristics and cutoff values of the dimensions of the Voice Activity and Participation Profile (VAPP) protocol, which discriminates the dysphonic and vocally healthy individuals; to verify if the cutoff values remain the same for a sample of teachers.


METHODS
Efficiency characteristics and cutoff values of VAPP data from 171 subjects were analyzed by receiver-operating characteristic (ROC) curve: 90 teachers (60 dysphonic and 30 vocally healthy individuals, with a similar mean age, p=0.418) and 81 nonteachers (48 dysphonic and 33 vocally healthy individuals, with a similar mean age, p=0.934).


RESULTS
The area under the ROC curve (AUC) and the cutoff values of the total score of VAPP for discriminating the individuals with and without dysphonia are different for the nonteachers and teachers. The nonteachers presented AUC=0.986 (p<0.001) and 4.5 points of cutoff of the total score of VAPP (sensitivity=95.8%; specificity=90.9%); the teachers presented AUC=0.872 (p<0.001) and 14.6 points of cutoff of the total score of VAPP (sensitivity=91.7%, specificity=75.9%).


CONCLUSION
The cutoff values of VAPP are different for the nonteachers and teachers, being higher for the teachers but with greater sensitivity and specificity for the nonteachers, and can be used to screen large populations with the risk of voice disorders.