31 We assessed heterogeneity with the I 2 statistic, and we considered that heterogeneity might not be significant when I 2 < 40%. 31 We considered it appropriate to use random-effects models in all the meta-analysis because of the overall heterogeneity in terms of population, intervention and comparators. 34 We executed a sensitivity analysis, taking into account contradictory results within studies.
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Effects of decision aids for depression treatment in adults: systematic review.
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