Table 1.

Characteristics and classification of included meta-analyses

Study	N	Cohen's d	Odds ratio	CI	Significance	Classification
Babbage et al., 2011	13	−1.11		−0.97 to −1.25	*	Psychology
Bai, 2011	18		1.47	1.22–1.77	*	Genetic
Björkhem-Bergman et al., 2011	6	−1.20		1.60–8.00	*	Treatment
Bucossi et al., 2011	21	0.41		0.17–0.65	*	Neurochemistry
Chamberlain et al., 2011	11	−0.51		0.83–1.08	*	Psychology
Chang et al., 2011a	56	−0.19		−0.29 to −0.10	*	Psychology
Chang et al., 2011b	6		0.98	0.86–1.12	—	Genetic
Chen et al., 2011	12		0.60	0.52–0.69	*	Miscellaneous
Chung and Chua, 2011	11		0.67	0.43–1.04	—	Treatment
Domellöf et al., 2011	14		2.12	1.59–2.78	*	Psychology
Etminan et al., 2011	14		0.80	0.70–0.92	*	Treatment
Feng et al., 2011	4		1.20	1.04–1.40	*	Genetic
Green et al., 2011	17	−0.59		−0.93 to −0.26	*	Neurochemistry
Han et al., 2011	14		1.35	1.06–1.72	*	Genetic
Hannestad et al., 2011	13	−0.13		−0.55 to 0.29	—	Treatment
Hua et al., 2011	27		1.13	1.05–1.21	*	Genetic
Lindson and Aveyard, 2011	8		1.05	0.92–1.19	—	Treatment
Liu et al., 2011a	12		1.04	0.88–1.22	—	Genetic
Liu et al., 2011b	6		0.89	0.82–0.96	*	Genetic
MacKillop et al., 2011	57	0.58		0.51–0.64	*	Psychology
Maneeton et al., 2011	5		1.67a	1.23–2.26	*	Treatment
Ohi et al., 2011	6		1.12	1.00–1.26	*	Genetic
Olabi et al., 2011	14	−0.40		−0.62 to −0.19	*	Brain imaging
Oldershaw et al., 2011	10	−0.51		−0.73 to −0.28	*	Psychology
Oliver et al., 2011	7		0.86	0.79–0.95	*	Treatment
Peerbooms et al., 2011	36		1.26	1.09–1.46	*	Genetic
Pizzagalli, 2011	22	0.92		0.44–1.39	*	Treatment
Rist et al., 2011	5		2.06	1.33–3.19	*	Miscellaneous
Sexton et al., 2011	8	0.43		0.06–0.80	*	Brain imaging
Shum et al., 2011	11	0.89		0.75–1.02	*	Psychology
Sim et al., 2011	2		1.23a	1.08–1.52	*	Treatment
Song et al., 2011	12	0.15		0.04–0.26	*	Neurochemistry
Sun et al., 2011	6		1.93	1.55–2.41	*	Genetic
Tian et al., 2011	4	1.26		0.95–1.57	*	Treatment
Trzesniak et al., 2011	11		1.98	1.33–2.94	*	Brain imaging
Veehof et al., 2011	8	0.37		0.20–0.53	*	Treatment
Vergouwen et al., 2011	24		0.83	0.74–0.93	*	Treatment
Vieta et al., 2011	10		0.68a	0.60–0.77	*	Treatment
Wisdom et al., 2011	53	−0.14		−0.21 to −0.07	*	Genetic
Witteman et al., 2011	26	−1.41		−1.76 to −1.05	*	Psychology
Woon and Hedges, 2011	24	−0.60		−0.83 to −0.37	*	Brain imaging
Xuan et al., 2011	20		1.00	0.86–1.16	—	Genetic
Yang et al., 2011a, cohort	14		1.38a	1.18–1.61	*	Miscellaneous
Yang et al., 2011a, case–control	7		2.48	1.93–3.19	*	Miscellaneous
Yang et al., 2011b	3	0.67		0.43–0.92	*	Treatment
Yuan et al., 2011	14		4.98	3.97–6.23	*	Genetic
Zafar et al., 2011	8		1.07a	0.91–1.27	—	Treatment
Zhang et al., 2011	12		1.27	1.01–1.59	*	Genetic
Zhu et al., 2011	8	0.84		0.18–1.49	*	Brain imaging

Classification performed by two independent raters.

^aRelative risk.

*p < 0.05.