From: Impact of COVID-19 on the oral health of adults in Wuhan and China: results of a nationwide online cross-sectional questionnaire survey
Population
Toothbrushing frequency (%)
Twice or more
Once
Less than once
Wuhan
1507
73.59
23.62
2.79
Other places
1845
72.68
24.82
2.50
Total
3352
73.09
24.28
2.63