Table 3 Subdomain analysis of the MoCA scores in the four groups

Group

MoCA subdomains

visuospatial and executive ability

naming

attentional computation

language

abstraction

delayed memory

orientation

CCT group

Pre

1(0,2.25)

3(1,3)

4(2,5.25)

1(0,2.25)

1(0,1)

0(0,1)

4(3,6)

Post

1(0,3)

3(2,3)

5(3,6)

1.5(0,3)

1(0,2)

1(0,2)

5(4,6)

Diff

0(0,0)^a

0(0,0.25)

0(0,1)

0(0,0.25)

0(0,1)

0.5(0,1)

0(0,1)

Z

-1.000

-1.857

-2.714

− 0.816

-1.633

-2.810

-1.897

P

0.317

0.063

0.007*

0.414

0.102

0.005*

0.058

tDCS group

Pre

1(0.75,3)

2(0,3)

2(0.75,5)

1(0,2)

1(0,1.25)

0(0,1)

4(2,5)

Post

1(1,2.25)

2(0.75,3)

5(2,5)

0.5(0,3)

1(0,2)

1(0,3)

5(2.75,6)

Diff

0(0,1)^a

0(0,1)

1(0,2)

0(-0.25,0)^a

0(0,0)

0.5(0,2)

0(0,2.25)

Z

− 0.933

-2.271

-2.480

− 0.431

-1.633

-2.547

-1.379

P

0.351

0.023*

0.013*

0.666

0.102

0.011*

0.168

CACT group

Pre

1(0,2.25)

2.5(1,3)

4.5(2.75,5)

1(0,2)

1(0,2)

0(0,1)

4.5(3.5,6)

Post

1.5(1,3.25)

3(1,3)

4(3.75,5)

1(0.75,2)

1(0.75,2)

1(0,3.25)

4.5(4,5.25)

Diff

0(0,1)^a

0(0,1)

0(0,1)^a

0(0,1)

0(-0.25,0.25)

0.5(0,2)

0(-0.25,1)

Z

-1.492

-1.265

-1.512

-1.310

− 0.302

-2.699

− 0.489

P

0.136

0.206

0.131

0.19

0.763

0.007*

0.625

CACT + tDCS group

Pre

1(0,2)

2(1.75,3)

3.5(2,5)

1(0,2)

1(1,1)

0(0,1.25)

4.5(3,6)

Post

3(2,4)

3(2.75,3)

5.5(5,6)

2(1.75,3)

1(1,2)

3(1,3)

6(4.75,6)

Diff

1.5(1,2.25)

1(0,1.25)

2(0.75,2.25)

1(0,1)

0(0,1)

1.5(0,3)

1(0,2)

Z

-3.453

-2.873

-3.347

-2.913

-2.333

-2.971

-2.672

P

0.001*

0.004*

0.001*

0.004*

0.02*

0.003*

0.008*