Table II.
Anomalies in stroboscopic parameters. * χ2 test or Fisher's exact test
| Teachers N = 155 |
Controls N = 75 |
P* | |||
|---|---|---|---|---|---|
| (n/N) | % | (n/N) | % | ||
| Motility vocal folds | 0 | (0.0) | 0 | (0.0) | |
| Profile vocal folds | 11 | (7.1) | 4 | (5.3) | 0.78 |
| Morphology vocal folds | 21 | (13.5) | 2 | (2.7) | 0.01 |
| Morphology false vocal folds | 2 | (1.3) | 0 | (0.0) | 0.99 |
| Vibration amplitude vocal folds | 6 | (3.9) | 0 | (0.0) | 0.18 |
| Frequency vibratory cycle | 9 | (5.8) | 2 | (2.7) | 0.51 |
| Symmetry cordal vibration | 21 | (13.5) | 4 | (5.3) | 0.06 |
| Glottic closure | 46 | (29.7) | 3 | (4.0) | <0.01 |
| Morphology incomplete glottic closure | 45 | (29.0) | 3 | (4.0) | <0.01 |
| Mucosal wave | 39 | (25.2) | 2 | (2.7) | <0.01 |
| Place of the phonatory vibration | 1 | (0.6) | 0 | (0.0) | 0.99 |
| Attitude of supraglottic structures | 1 | (0.6) | 0 | (0.0) | 0.99 |