Table 3.

Effect size of studies reporting mean changes in BDI

Reference	Treatment	Number	Hedge’s G	p-value
Dragasevic (2002) [22]	DLPFC Stim	10	1.261	0.002
Fregni (2004) [24]	DLPFC Stim + Medication Sham	21	1.729	<  0.001
Fregni (2004) [24]	DLPFC Sham + Medication	21	1.843	<  0.001
Torres (2015) [27]	PFC Stim	16	1.712	<  0.001