Table 2 Data splitting strategies.

From: Classification of major depressive disorder using vertex-wise brain sulcal depth, curvature, and thickness with a deep and a shallow learning model

Splitting By Age/Sex

Splitting by Site

Fold

Number of subjects

Mean age (SD)

Number of Females (%)

Fold

Number of subjects

Mean age (SD)

Number of Females (%)

0

708

38.34 (16.41)

434 (61)

0

1249

50.28 (13.78)

612 (49)

1

685

38.41 (16.51)

395 (58)

1

1005

36.01 (12.14)

577 (57)

2

692

38.59 (16.25)

441 (64)

2

738

36.30 (13.39)

465 (63)

3

709

37.99 (16.07)

428 (60)

3

579

55.00 (12.57)

294 (51)

4

704

38.74 (15.93)

417 (59)

4

563

33.06 (15.73)

374 (66)

5

708

38.90 (16.28)

415 (58)

5

596

26.42 (11.25)

370 (62)

6

693

38.09 (16.27)

423 (61)

6

559

36.89 (13.71)

372 (67)

7

716

38.3 (16.35)

431 (60)

7

589

35.71 (16.52)

356 (60)

8

689

38.55 (16.12)

396 (57)

8

546

28.70 (13.59)

359 (66)

9

708

38.14 (16.57)

406 (57)

9

588

33.99 (16.12)

407 (69)

  1. Differences manifested in age/sex distribution and number of subjects between corresponding folds per splitting strategy.
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