Calculate the mean effect size estimate and its confidence limits for the data in this table. Bloch

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Calculate the mean effect size estimate and its confidence limits for the data in this table. Bloch et al. (2009) conducted a meta-analysis on the treatment of Attention-deficit/hyperactivity disorder. There have been reports that psychostimulant medications given to children with ADHD who have a history of Tourette’s syndrome can increase the severity of tics. The authors found (among other studies) four studies that compared methylphenidate derivatives against placebo-controlled condition by rating scales for tic and ADHD severity. The results of these four studies for presence and frequency of tics are shown here. (The standard errors of d were estimated from the published results.)image text in transcribed

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