Table 4.
Percentage of studies per OMI showing significant results between pre- and post-treatment
| OMI | p value ≤ 0.05 | Percentage of significance (%) | |
|---|---|---|---|
| Subjective | VHI-30 | 9/10 (1 NS,—NA) | 90.0* |
| VHI-10 | 4/7 (- NS, 3 NA) | 57.1* | |
| subjective rating (3-point) | 1/4 (- NS, 3 NA) | 25.0 | |
| Perceptual | GRBAS | 13/18 (2 NS, 3 NA) | 72.2* |
| own perceptual rating | 1/4 (-NS, 3 NA) | 25.0 | |
| Acoustic | F0 | 6/20 (10 NS, 4 NA) | 30.0 |
| Shimmer | 6/19 (11NS, 2 NA) | 31.6 | |
| Jitter | 8/18 (8 NS, 2 NA) | 44.4 | |
| NHR | 5/11 (4 NS, 2 NA) | 45.5 | |
| HNR | 0/6 (5 NS, 1 NA) | 0.0 | |
| MR | 4/8 (2 NS, 2NA) | 50.0 | |
| APQ | 3/5 (1 NS, 1NA) | 60.0* | |
| PPQ | 2/4 (1 NS, 1NA) | 50.0 | |
| SPI | 0/4 (3 NS, 1 NA) | 0.0 | |
| Aerodynamic | MPT | 13/19 (5 NS, 1 NA) | 68.4* |
| MFR | 4/10 (4 NS, 2 NA) | 40.0 | |
| DR | 1/5 (4 NS,—NA) | 20.0 | |
| Endoscopic | MV | 10/21 (1 NS, 10 NA) | 47.1 |
| GC | 5/18 (1 NS, 12 NA) | 27.8 |
VHI voice handicap index, GRBAS grade roughness breathiness asthenic strain, F0 fundamental frequency, NHR noise to harmonic ratio, HNR harmonic to noise ratio, MR melodic range, APQ amplitude pertubation quotient, PPQ pitch perturbation quotient, SPI soft phonation index, MPT maximum phonation time, MFR mean flow rate, DR dynamic range, MV mucosal wave, GC glottic closure
NS not significant, NA not available
* > 50% “percentage of significance