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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