Table 3.

Subgroup analysis of COVID-19 severe cases according to deterioration timing with a significant difference as p value <0.001

Severe COVID-19		Oral health status			P value
		Poor oral health	Fair oral health	Good oral health
First week deterioration	N	12	5	2	<0.001
	%	63.1%	26.3%	10.6%
Second week deterioration	N	40	15	6
	%	65.6%	24.6%	9.8%