Table 2.

Effect size of studies reporting mean changes in HAM-D. Epstein et al. (2007) used the 17 and 21 item HAM-D inventory, noted under “Treatment.” Post-treatment population sizes (n) that changed are noted under corresponding studies groups by parentheses

Reference	Treatment	Number	Hedge’s G	p-value
Brys (2016) [18]	M1 Stim + DLPFC Stim	20 (19)	0.698	0.031
Brys (2016) [18]	M1 Stim + DLPFC Sham	14	1.287	< 0.001
Brys (2016) [18]	M1 Sham + DLPFC Stim	12	0.185	0.495
Brys (2016) [18]	M1 Sham + DLPFC Sham	15	1.559	< 0.001
Dragasevic (2002) [22]	DLPFC Stim	10	1.377	0.001
Epstein (2007) [23]	DLPFC Stim (17)	14 (8)	1.581	0.001
Epstein (2007) [23]	DLPFC Stim (21)	14 (8)	1.686	0.001
Fregni (2004) [24]	DLPFC Stim + Medication Sham	21	2.103	< 0.001
Fregni (2004) [24]	DLPFC Sham + Medication	21	2.012	< 0.001
Torres (2015) [27]	PFC Stim	16	2.897	< 0.001