Two-sample Mendelian randomization study does not reveal a significant relationship between cytomegalovirus (CMV) infection and autism spectrum disorder

Table 1 Heterogeneity and horizontal pleiotropy of 3 MR studies

exposure	method	Qpval	Egger intercept	pval
unspecified cytomegaloviral diseases	MR Egger	0.096	-0.002	0.991
unspecified cytomegaloviral diseases	IVW	0.174
anti-CMV IgG level	MR Egger	0.278	0.056	0.500
anti-CMV IgG level	IVW	0.324
maternalCMV	MR Egger	0.929	-0.044	0.896
maternalCMV	IVW	0.983

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