No association between the Ser9Gly polymorphism of the dopamine receptor D3 gene and schizophrenia: a meta-analysis of family-based association studies

Table 2 Meta-analysis of HRR studies of the association between DRD3 Ser9Gly and schizophrenia

Author	Year	Location	Ethnicity	Diagnostic criteria	Sample size	Transmitted		Untransmitted		OR	95% CI	Z-value	P-value
Author	Year	Location	Ethnicity	Diagnostic criteria	Sample size	Ser9	Gly9	Ser9	Gly9	OR	95% CI	Z-value	P-value
Prasad⁴⁷	1999	India	Indians	DSM-IV	264	67	65	62	70	1.164	0.718–1.886	0.615	0.538
Kremer⁴⁸	2000	Palestinian	Arabian	DSM-IV	516	173	85	172	86	1.018	0.705–1.468	0.094	0.925
Ambrosio⁴²	2004	Portugal	Caucasian	DSM-IV	360	122	58	126	54	0.901	0.577–1.409	−0.455	0.649
Lu⁴³	2005	China	East Asian	CCMD-III	404	94	108	120	82	0.595	0.401–0.882	−2.584	0.010
Zai⁴⁹	2010	Canada	Caucasian	DSM-IV	160	46	34	50	30	0.812	0.431–1.530	−0.645	0.519
Total					1704	502	350	530	322	0.869	0.713–1.059	−1.395	0.163

ISSN: 1471-2350