Forest plot of tardive dyskinesia rate ratios of randomized studies comparing first‐generation antipsychotics (FGAs) to second generation antipsychotics (SGAs). ARI – aripiprazole, AMI – amisulpride, CLZ – clozapine, CPZ – chlorpromazine, HAL – haloperidol, OLZ – olanzapine, PALI – paliperidone, PER – perphenazine, RIS – risperidone, ZIP – ziprasidone