Table 13 Correlation test for test–retest reliability
From: The effect of wearing face masks on voice and intelligibility of speech during the COVID-19 pandemic
| Â | No. of items | Results of the questionnaire done for the 1st time | Results for the 2nd time | Level of consistency |
|---|---|---|---|---|
Voice fatigue without face mask | 10 | 0.846 | 0.859 | High |
Voice fatigue with face mask | 10 | 0.68 | 0.667 | acceptable |
Self -Perception of speech intelligibility | 7 | 0.412 | 0.397 | low |
The received auditory feedback: With face mask | 6 | 0.691 | 0.686 | acceptable |
Breathing with face mask | 2 | 0.838 | 0.892 | High |