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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

From: Treating refractory depression in Parkinson’s disease: a meta-analysis of transcranial magnetic stimulation

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