Skip to main content

Table 4 Ten split-half replications of full population

From: A unique pattern of cortical connectivity characterizes patients with attention deficit disorders: a large electroencephalographic coherence study

Part 1: Number of subjects in training and test sets and top five factors chosen per trial

Trial

Number of training set subjects

Number of test set subjects

Number of factors used

Top five factors chosen

1

462

504

20

13, 4, 1, 12, 40

2

494

472

20

13, 4, 12, 1, 3

3

512

454

23

13, 12, 4, 1, 2

4

475

491

18

13, 3, 12, 1, 2

5

480

486

20

13, 4, 2, 12, 7

6

487

479

20

13, 12, 4, 9, 3

7

479

487

23

13, 1, 4, 12, 2

8

492

474

25

13, 4, 1, 12, 3

9

497

469

21

13, 4, 12, 2, 7

10

488

478

17

13, 4, 12, 3, 7

Part 2: Ten test set classification accuracies and t-test results

Trial

Num CON

% CON

Num ADD

% ADD

Correct

Correct

Correct

Correct

t

df

P

1

285/336

84.82

150/168

89.29

19.76

502

0.0001

2

273/311

87.78

195/218

85.71

18.55

470

0.0001

3

252/296

85.14

145/158

91.77

20.34

452

0.0001

4

275/316

87.03

158/175

90.29

21.96

489

0.0001

5

277/318

87.11

151/168

89.88

20.68

484

0.0001

6

264/307

85.99

155/172

90.12

19.49

477

0.0001

7

274/314

87.26

155/173

89.60

22.13

485

0.0001

8

272/302

90.07

155/172

90.17

20.90

472

0.0001

9

258/291

88.66

148/178

83.15

19.18

467

0.0001

10

261/312

83.65

151/166

90.96

20.32

476

0.0001

Mean

86.75

 

88.49

   
  1. Num number of, CON normal control, ADD attention deficit disorder, t t-test, df degrees of freedom, P probability value. Results are the number and percent of correctly classified test set subjects; t values are determined for each test set using the corresponding training-set-developed discriminant function scores