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. 2012 Jul 25;7(7):e41482. doi: 10.1371/journal.pone.0041482

Figure 3. ‘Group’ x ‘DRD4 VNTR 7R- allele status’ interaction effect on TMT B-A score.

Figure 3

Performance in TMT B-A is obtained by regressing depression and gender on the dependent variable, and then saving the standardized residual from this model.