Prone position reduces the risk of patients with mild or moderate COVID-19 progressing to severe or even critical cases: a retrospective study

Table 2 Effect of prone position on progression from mild or moderate cases to severe or critical cases

	Control group	Prone position group	χ² value	P value
Mild or moderate cases	3767	34	9.962	0.002
Severe or critical cases	1106	0
Total	4873	34
Progression rate	22.7%	0%

ISSN: 2047-783X