Fig. 4

Error rates of pharmacists and nurses in two groups. Preparation errors and incidents in two categories (drug strength errors, drug name errors) were reclassified into another two groups (drug name similarity (−) group, drug name similarity (+) group). Open circles indicate the error rates of pharmacists and closed circles indicate the error rates of nurses, respectively. Bars in the left figure indicate the number of preparation errors and bars in the right figure indicate the number of incidents more than Level 0, respectively. Data were analyzed with a chi-square test. P values of <0.05 were considered statistically significant, and P values of <0.1 were considered marginally statistically significant