Table II.
Descriptive measures of voice quality, speech intelligibility, and communication participation of the PD group
| CAPE-V |
||||||||
|---|---|---|---|---|---|---|---|---|
| Participant | Roughness | Breathiness | Strain | Pitch | Loudness | Intelligibility (Scaled) | Intelligibility (% correct words) | CPIB T (logit) |
|
| ||||||||
| PD03 | 55 | 25 | 22.50 | 12.50 | 15 | 95.00 | 100 | 52.7 (0.27) |
| PD04 | 37.50 | 10 | 40 | 15 | 15 | 95.00 | 96.90 | 52.7 (0.27) |
| PD05 | 17.50 | 22.50 | 20 | 22.50 | 15 | 96.00 | 99.03 | 45.5 (−0.45) |
| PD06 | 49.50 | 17.50 | 32.50 | 11.50 | 27.50 | 96.00 | 96.30 | 59.2 (0.92) |
| PD07 | 70 | 20 | 40 | 17.50 | 15 | 97.50 | 98.44 | 51.5 (0.15) |
| PD08 | 55 | 45 | 34 | 35 | 42.50 | 91.50 | 88.81 | 52.7 (0.27) |
| PD09 | 20 | 27.50 | 20 | 10 | 30 | 100 | 98.68 | 71 (2.1) |
| PD11 | 47.50 | 22.50 | 25 | 17.50 | 25 | 97.50 | 99.09 | 52.7 (0.27) |
| PD12 | 50 | 70 | 40 | 40 | 50 | 100 | 98.68 | 71 (2.1) |
| PD13 | 37.50 | 20 | 30 | 30 | 30 | 100 | 98.18 | 62.2 (1.22) |
| PD14 | 20 | 15 | 18.50 | 34 | 36.50 | 99.00 | 97.20 | 71 (2.1) |
| PD15 | 50 | 52.50 | 40 | 20 | 30 | 92.50 | 89.63 | 49 (−0.1) |
| PD16 | 32.50 | 10 | 30 | 15 | 10 | 100 | 93.87 | 52.7 (0.27) |
| PD17 | 31 | 21 | 25 | 10 | 15 | 100 | 97.27 | 62.2 (1.22) |
| PD18 | - | - | - | - | - | - | - | 51.5 (0.15) |
Note. Audio recordings from a standardized reading passage (either the Rainbow Passage (Fairbanks, 1960) or Grandfather Passage (Darley et al., 1975)) and a maximum sustained phonation task were used to generate perceptual ratings. Scores were averaged across the three experienced raters (2 speech-language pathologists and one research assistant) to derive a mean rating for each voice quality dimension. All intraclass correlation coefficients were >0.81 (Range 0.81 to 0.96). All ratings made in medication ‘on’ state. Roughness, breathiness, strain, pitch, loudness perceptual ratings are based on sustained phonation for the lax vowel /ɑ/ and a standardized reading passage using the 100-millimeter visual analog scale (VAS) from the Consensus Auditory-Perceptual Evaluation of Voice (CAPE-V; (Kempster et al., 2009)). Intelligibility (perceptual) ratings are based on a standardized reading passage using the VAS from the CAPE-V. Intelligibility (% correct words) scores are based on 11 sentences from the Sentence Intelligibility Test (Yorkston et al., 1996). PD18 had missing audio data in medication ‘on’ state. Scores on the Communicative Participant Item Bank (CPIB) are provided as T and logit scores for interpretability across studies, where higher scores on the CPIB are more favorable and indicate greater communicative participation.