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. Author manuscript; available in PMC: 2012 Mar 13.
Published in final edited form as: J Speech Lang Hear Res. 2010 Aug;53(4):862–875. doi: 10.1044/1092-4388(2009/09-0040)

Table 1.

Questions asked of a subset of the teachers before the start of the study.

Years of
Teaching		 Hours in
Teaching Day		 % Voicing
at Work		 % Voicing
Not at Work		 Class
Size
Mean 23.3 6.6 80.7 34.5 23.9
Std. Dev. 10.7 2.2 8.8 20.5 12.0
Median 25 5 78.5 30 20
N 15 15 14 13 14