Factors related to the mortality risk of severe hand, foot, and mouth diseases (HFMD): a 5-year hospital-based survey in Guangxi, Southern China

Table 3 Analysis of protective effect of EV-A71 vaccination on death of severe HFMD cases

Outcome	EV-A71 vaccination		Protective effectiveness (%)	Effect index	χ²	OR	p
Outcome	Yes n (%)	No n (%)	Protective effectiveness (%)	Effect index	χ²	OR	p
Death	14 (2.23)	67 (7.24)	70.80	4.79	19.02	0.29	< 0.01
Survival	614 (97.77)	858 (92.76)

ISSN: 1471-2334