Table 2.

Results of univariate meta-regression analyses.

	Coef (B)	95% CI		p
		Lower Limit	Upper Limit
Augmentation Strategy	−0.02	−0.88	0.46	0.54
Sessions per day	0.49	−0.18	1.18	0.15
Session duration	−0.27	−0.09	0.41	0.43
Number of weeks	−0.05	−0.16	0.48	0.27
Session total	−0.03	−0.08	0.01	0.18

Note: Meta-regressions were performed using one variable per time due to the relatively low sample size included in this meta-analysis. Statistical significance was indicated by p ≤ 0.05. Therefore, no variable was found to be statistically significant. Augmentation strategy: tDCS combined with concurrently commenced other interventions (i.e., pharmacotherapy). Abbreviation: CI—confidence interval.