Table:
Best model*	Training balanced accuracy	Testing balanced accuracy	Cross-validationconsistency	Sign test (P)
1	0.397	0.612	6/10	8 (0.423)
1, 2	0.525	0.605	9/10	8 (0.342)
1, 2, 3	0.687	0.672	10/10	9 (0.015)
1, 2, 3, 4	0.585	0.612	7/10	7 (0.325)
1, 2, 3, 4, 5	0.575	0.512	8/10	6 (0.642)
1, 2, 3, 4, 5, 6	0.622	0.479	7/10	8 (0.576)
1, 2, 3, 4, 5, 6, 7	0.499	0.526	8/10	5 (0.734)
1, 2, 3, 4, 5, 6, 7, 8	0.613	0.611	7/10	6 (0.412)
1, 2, 3, 4, 5, 6, 7, 8, 9	0.598	0.572	6/10	7 (0.665)
1, 2, 3, 4, 5, 6, 7, 8, 9, 10	0.613	0.476	8/10	5 (0.684)
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11	0.504	0.644	9/10	6 (0.337)

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| Best model* | Training balanced accuracy | Testing balanced accuracy | Cross-validationconsistency | Sign test (P) | 
 | --- | --- | --- | --- | --- | 
 | 1 | 0.397 | 0.612 | 6/10 | 8 (0.423) | 
 | 1, 2 | 0.525 | 0.605 | 9/10 | 8 (0.342) | 
 | 1, 2, 3 | 0.687 | 0.672 | 10/10 | 9 (0.015) | 
 | 1, 2, 3, 4 | 0.585 | 0.612 | 7/10 | 7 (0.325) | 
 | 1, 2, 3, 4, 5 | 0.575 | 0.512 | 8/10 | 6 (0.642) | 
 | 1, 2, 3, 4, 5, 6 | 0.622 | 0.479 | 7/10 | 8 (0.576) | 
 | 1, 2, 3, 4, 5, 6, 7 | 0.499 | 0.526 | 8/10 | 5 (0.734) | 
 | 1, 2, 3, 4, 5, 6, 7, 8 | 0.613 | 0.611 | 7/10 | 6 (0.412) | 
 | 1, 2, 3, 4, 5, 6, 7, 8, 9 | 0.598 | 0.572 | 6/10 | 7 (0.665) | 
 | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 | 0.613 | 0.476 | 8/10 | 5 (0.684) | 
 | 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 | 0.504 | 0.644 | 9/10 | 6 (0.337) |