Table I.

Biographical and voice information regarding the study population (N=10).

Teacher F=Female M=Male	Percent Phonation Time	Age	VHI Total Score	VHI Self Rating	Self- reported Vocal Fatigue	Self-reported Voice Problems	Grade Taught	Subject Taught	Amplifier Worn
F064	15.8%	45	N/A	Normal	Yes	Hoarseness, sudden voice change, tightness	K-5	Phys. Ed.	No
F072	27.1%	48	58	Moderate	Yes	Hoarseness, sudden voice change, reduced pitch, discomfort, pain, tightness	4	General	Occasional
F079	9.7%	56	14	Mild	Yes	Reduced pitch	1–7	Phys. Ed.	No
F080	12.6%	29	18	Normal	Yes	Tightness	K-5	Music	No
F089	18.7%	31	22	Mild	Yes	Hoarseness, sudden voice change, discomfort	1–8	Music, Choir	Occasional
F104	19.2%	50	4	Normal	No	None	3–4	General	No
M045	18.7%	29	20	Normal	Yes	Hoarseness, sudden voice change, pain, discomfort	9–12	Theatre	No
M056	7.6%	53	33	Normal	No	Tightness, sudden voice change	High School	Physical Education	No
M057	19.2%	45	N/A	Normal	Yes	Hoarseness, discomfort, tightness, reduced pitch	9–12	Biology, Drama, Govt., Health	Yes
M059	15.1%	59	12	Normal	No	N/A	Elem., Middle School	English, Math, Principal	No

Note: Vocal Fatigue and “self-reported voice problems” were obtained from the baseline Vocal Health Questionnaire. VHI total score and self-rating were obtained from the baseline VHI. “Percent Phonation Time” is based on the percent of time phonation occurred while the dosimeter was attached and turned on.