Table 1 Demographic, clinical and neuropsychological data of the LH stroke patient groups undergoing anodal or sham tDCS (applied over left posterior parietal cortex, PPC)

Age (years)

58.4 (±13)

59.8 (±13)

t(28) = .305, p = .762

Gender (female/male)

1/13

4/ 12

X²(1) = 1.714, p = .336

Time post stroke (median in days)

25.5

23.0

t(28) = .751, p = .459

Days till follow-up

100.9 (±7.0)

99.4 (±10.7)

t(23) = −.396, p = .696

MMSE (max. 30)

28.0 (±1.5)

28.3 (±0.9)

t(21) = .604, p = .552

HADS Anxiety score (max. 21, cut-off > 7)

5.2 (±3.5)

4.3 (±3.8)

t(26) = −.641, p = .527

HADS Depression score (max. 21, cut-off > 7)

5.0 (±3.1)

3.7 (±2.7)

t(26) = − 1.157, p = .258

LQ

96.0 (±8.0)

95.3 (±8.5)

t(28) = −.248, p = .806

MRC paresis scale (right hand, max. 5)

3.8 (±2.1)

4.6 (±0.5)

t(28) = 1.447, p = .169

Relative grip force of the contra-lesional right hand (%, in relation to the ipsi-lesional left hand)

65.8 (±10.1)

78.0 (±7.4)

t(28) = .981, p = .335

mRS

2.5 (±1.2)

2.0 (±1.0)

t(28) = −1.165, p = .254

ACL-K (max. 40, cut-off < 33)

25.4 (±11.5)

28.8 (±10.7)

t(28) = .837, p = .410

KAS total score (left hand, max. 80, cut-off < 77)

70.6 (±8.6)

70.4 (±13.5)

t(28) = −.047, p = .963

KAS pantomime score (max. 40)

36.1 (±5.0)

35.7 (±4.5)

t(28) = −.263, p = .794

KAS imitation score (max. 40)

34.4 (±4.8)

34.4 (±9.2)

t(28) = −.019, p = .985

De Renzi actual object use test (left hand, max. 32)

31.4 (±0.9)

31.0 (±2.0)

t(28) = −.744, p = .463