. 2020 Aug 5;63(9):2861–2869. doi: 10.1044/2020_JSLHR-20-00189

Table 3.

Results of between-group statistical comparisons SPL-normalized features using the accelerometer (ACC) signal.

Group comparison	Hotelling's T ²			ACFL'			MFDR'			SGP'			OQ'
Group comparison	OVV	ACC¹	ACC²	OVV	ACC¹	ACC²	OVV	ACC¹	ACC²	IOP	ACC¹	ACC²	OVV	ACC¹	ACC²
PVH vs. Controls
Comfortable	1.48^*	2.11 ^†	2.16 ^†	−0.80^*	−0.68 ⁺	−0.66 ⁺	−0.53 ⁺	–	–	−1.53^*	−1.63 ^†	−1.68 ^†	−1.36^*	−1.13 ^†	−1.08 ^†
Loud	1.51^*	1.54 ⁺	1.57 ⁺	−0.76^*	−1.01^*	−0.89^*	−0.70 ⁺	–	–	−1.47^*	−1.65 ^†	−1.67 ^†	−1.11^*	−1.15 ^†	−1.11 ^†
NPVH vs. Controls
Comfortable	1.04 ^a	1.62^*	1.47 ⁺	–	–	–	–	–	–	−0.60 ⁺	−0.62^*	−0.67 ⁺	−0.73 ⁺	−0.98^*	−0.71 ⁺
Loud	1.29^*	1.45 ⁺	1.27 ⁺	–	–	–	–	–	–	–	−0.69 ^a	−0.60 ^‡	−0.66 ⁺	−1.01 ^†	−0.78^*

Note. In ACC¹, SPL was estimated from the microphone signal. In ACC², SPL was estimated from the ACC signal. The OVV columns show the results from (Espinoza et al., 2017). Reported are effect sizes for the multivariate, paired-samples Hotelling's T ² tests and univariate, one-tailed paired t tests (Cohen's d). Negative values for the univariate effect sizes signify that SPL-normalized measures are smaller in the patient groups than in their respective control groups. SPL = sound pressure level; ACFL' = SPL-normalized peak-to-peak airflow; MFDR' = SPL-normalized maximum flow declination rate; SGP' = SPL-normalized subglottal air pressure; OQ' = SPL-normalized open quotient; OVV = oral airflow volume velocity; IOP = intraoral pressure; PVH = phonotraumatic vocal hyperfunction; NPVH = nonphonotraumatic vocal hyperfunction.

^†

p < .01.

p < .025.

⁺

p < .05.

p < .06.

^‡

p = .068.