Fig. 3: Sensitivity and subgroup analyses of the hyperactivity index: teacher ratings (95% CI). ADHD = attention-deficit hyperactivity disorder (DSM-III-Revised),⁵⁸ ADDH = attention-deficit disorder with hyperactivity (DSM-III).⁴⁸ p values for statistical heterogeneity: *p = 0.006, †p < 0.001, ‡p = 0.04. §Variance from each trial reduced by 20% to compensate for correlation in crossover phases potentially leading to an underestimate of variance.