Table 6.

Association of an mtDNA variant (A15218G) shows an increased risk for G allele in a meta-analysis of four independent studies (total subjects n = 47,451)

Study population [Ref.]	Schizophrenia, n	Controls,n	OR	p value
Swedish [3]	4,579	5,610	0.8	0.02
UK (WTCCC2) [65]	3,058	5,033	2.87	4.99E-08
Danish [66]	2,538	2,3743	1.25	0.021
USA (dB GAIN) [63]	1,136	1,349	1.11	0.665
	Total SZ (n = 11,311)	Total C (n = 35,735)	1.20 pooled Lower–upper 95%: 1.07–1.35	2.15E-03