Table 2.

Diagnostic measures to quantify vocal effort (n=86)

Measure	Respondents n	% of total
Voice Handicap Index	67	78
Visual Analog Scales	26	30
Direct Magnitude Estimation	16	19
Vocal Fatigue Index	13	15
Evaluation of the Ability to Sing Easily	10	12
Borg scales	10	12
No measures	5	6
Voice Symptom Scale*	3	3
Other	21	24

^*(Deary et al., 2003)