From: The effect of wearing face masks on voice and intelligibility of speech during the COVID-19 pandemic
 | With face mask | Without face mask | P value | ||
---|---|---|---|---|---|
Mean | SD | Mean | SD | ||
Total score of tiredness of voice | 5.03 | 2.45 | 3.09 | 2.02 |  < 0.001* |
Total score of physical discomfort | 1.81 | 1.44 | 1.20 | 1.29 |  < 0.001* |
Score of improvement of voice after rest | 0.28 | 0.59 | 0.17 | 0.48 | 0.005* |
Total score of self-perception of voice fatigue | 7.12 | 3.48 | 4.46 | 3.01 |  < 0.001* |