. Author manuscript; available in PMC: 2015 Feb 5.

Published in final edited form as: Folia Phoniatr Logop. 2014 Feb 5;65(4):214–220. doi: 10.1159/000355867

Table 2.

Means and standard deviations for speech durations, vocal intensity and scaled sentence intelligibility are reported. Smaller numerical values for intelligibility (i.e., values closer to 0) indicate relatively better intelligibility. Standard deviations are reported in parentheses.

Measure	Group	Habitual	Clear	Loud
Articulatory Rate (syllables/second)	Control	3.7 (0.5)	2.4 (0.4)	3.3 (0.6)
Articulatory Rate (syllables/second)	PD	4.0 (0.6)	3.1 (0.7)	3.9 (0.7)
Sound Pressure Level (dB SPL)	Control	74 (2.8)	79 (4.4)	85 (4.2)
Sound Pressure Level (dB SPL)	PD	72 (2.4)	75 (3.6)	79 (3.0)
Diphthong Duration /ɑɪ/ (ms)	Control	178 (69)	273 (119)	231 (92)
Diphthong Duration /ɑɪ/ (ms)	PD	165 (51)	224 (99)	188 (69)
Diphthong Duration /ɔɪ/ (ms)	Control	190 (43)	304 (80)	253 (65)
Diphthong Duration /ɔɪ/ (ms)	PD	178 (53)	249 (101)	206 (52)
Intelligibility	Control	.32 (.07)	.23 (.06)	.22 (.09)
Intelligibility	PD	.50 (.13)	.38 (.15)	.35 (.12)