Table 2.

Studies included in the regional meta-analyses.

ID	Study	Year	N (F)	Age			Volume	No. peak voxels
				Mean (SD)	Range	Category
Regional volume meta-analysis
127	Almeida	2009	55 (32)	±31	–	4	GM	9
23	Chen	2007	411 (227)	46.7a (1.4a)	44–48	4	GM	11
25	Cheng	2009	50 (25)	27.1a (9.4a)	19–50	4	GM	14
128	Fan	2010	112 (46)	24.7a (2.8a)	18–33	4	Cbl GM	14
47	Good	2001a	465 (200)	32a (12.2a)	17–79	6	GM; WM	18; 7
48	Guo	2008	158 (80)	15.3 (4.7)	7–22	6	GM	14
61	Lai	–	60 (30)	27.9a (6.1a)	18–49	4	GM; WM	42; 18
67	Lentini	2012	86 (45)	35.1a (7.1a)	26–51	4	GM; WM	8; 2
129	Lombardo	2012	217 (116)	9.5a (1.1a)	8–11	3	GM	31
82	Nunnemann	2009	133 (73)	–	29–80	6	GM	32
130	Pletzer	2010	28 (14)	25.6a (4.7a)	–	4	GM	25
100	Savic	2011	48 (24)	34a (6a)	26–48	4	GM; WM	7; 3
131	Welborn	2009	117 (58)	22.8	18–40	4	GM & WM	7
118	Witte	2010	34 (17)	26.6 (5)	21–47	4	GM	18
121	Yamasue	2008	155 (66)	28.5a (4.2a)	21–40	4	GM	12
122	Yang	2008	57 (23)	11.7	7–17	3	GM	2
Regional density meta-analysis
132	Dong	2010	40 (20)	–	20–25	4	GM; WM	3; 3
43	Garcia-Falgueras	2006	91 (51)	20.1a (2.8a)	18–33	4	GM	14
47	Good	2001a	465 (200)	32a (12.2a)	17–79	6	WM	9
40	Fahim	2012	38 (20)	8.4a (0.1a)	–	3	GM; WM	3; 1
133	Lord	2010	46 (31)	–	50–74	5	GM	11
85	Peper	2009	78 (41)	11.9a (1.1a)	10–15	3	GM	17
134	Takahashi	2011	91 (35)	31.4a (8a)	20–79	6	GM	15
			136 (81)	65.7a (8.4a)		5		4
135	Van Laere	2001	81 (41)	44.2	20–81	6	GM	3
115	Wang	2012	140 (70)	20.9a (1.8a)	18–26	4	GM	16

Notes: Study ID count corresponds to and continues on from Table 1.

Abbreviations: F, female; GM, Grey matter; ID, identification number; N, number of participants; No., number; SD, standard deviation; WM, white matter.

^aWeighted mean and standard deviations.