Vocal Parameters Through Perioperative Course
| Time | |||||
| Parameter | Pre | 1 mo | 6 mo | 12 mo | Time |
| GRBAS | |||||
| G | 0.3 ± 0.5 | 0.7 ± 0.7 | 0.4 ± 0.5 | 0.4 ± 0.5 | <0.001 |
| R | 0.5 ± 0.5 | 0.8 ± 0.5 | 0.8 ± 0.4 | 0.9 ± 0.4 | <0.001 |
| B | 0.0 ± 0.2 | 0.1 ± 0.3 | 0.0 ± 0.2 | 0.1 ± 0.3 | 0.133 |
| A | 0 | 0.1 ± 0.2 | 0.0 ± 0.1 | 0 | NA |
| S | 0.0 ± 0.2 | 0.3 ± 0.5 | 0.1 ± 0.3 | 0.1 ± 0.2 | <0.001 |
| Acoustic | |||||
| Jitter (%) | 1.4 ± 1.0 | 1.5 ± 1.4 | 1.4 ± 1.1 | 1.6 ± 1.1 | 0.167 |
| Shimmer (%) | 4.0 ± 1.7 | 4.6 ± 3.2 | 3.9 ± 1.7 | 4.1 ± 1.6 | 0.024 |
| NHR (dB) | 0.1 ± 0.3 | 0.2 ± 1.3 | 0.2 ± 0.5 | 0.1 ± 0.0 | 0.376 |
| F0 (Hz*) | 198.8 ± 25.8 | 188.6 ± 28.6 | 192.6 ± 27.9 | 189.6 ± 28.6 | <0.001 |
| Fmax (Hz*) | 625.6 ± 210.4 | 433.3 ± 190.0 | 528.2 ± 192.6 | 557.7 ± 204.1 | <0.001 |
| Fmin (Hz*) | 153.7 ± 25.0 | 146.8 ± 27.5 | 158.3 ± 24.4 | 158.8 ± 23.1 | <0.001 |
| Subjective | |||||
| VHI | 5.0 ± 11.4 | 33.6 ± 26.2 | 19.8 ± 23.6 | 16.7 ± 18.5 | <0.001 |
↵* To compare F0, Fmax, and Fmin, only female patients were included in this analysis because of baseline sex-related differences.
NA = not applicable; NHR = noise-to-harmonic ratio.