“…Six studies (one reported in two papers) used retrospective reviews of disciplinary/performance records to explore performance [38][39][40]61,62,68,71]. Three studies used retrospective analysis of error data [52,53,72], whilst seven studies used prospective data collection techniques on errors [37,42,56,69,70] or clinical interventions [50,64]. Other less common methods used included critical incident technique [52], simulation testing in hypothetical scenarios [65], review of prescription monitoring incidents [41], analysis of claims data [59], videotaping and review of pharmacist performance [46], a controlled study exploring impact of ambient sounds on errors [47], comparison of error rates at different illumination levels [44], root-cause analysis of transcription errors [57], and a literature review (Table 1) [51].…”