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Other errors (28%) originated in stage 3 (prescription assembly) during which the prescription medications are pulled from the shelf and placed into dispensing containers. The remainder of the errors were equally distributed in the remaining categories: stage 1 (receiving prescriptions) and stage 6 (prescription delivery to patients), with 7% of the total errors in each area. The least number of errors were reported in stage 5, addressing errors involving computer software and insurance related matters. Regarding the types of dispensing errors, 40% were identified as an incorrect medication; 31% were identified as an incorrect dose. Among the remaining designated categories, the next most frequent type of error was incorrect directions (12%), followed by incorrect label and incorrect refill. The other errors did not fall into the designated categories. These included dispensing an expired medication, selecting an incorrect prescriber, a communication error, and the wrong quantity. Data related to staffing levels revealed that 68% of the errors occurred when 1 pharmacist was on duty; 29% occurred when 2 pharmacists were on duty (Figure 4). Three percent of the errors occurred when 3 pharmacists were present in the pharmacy. Of the errors that occurred with a single pharmacist on duty, 78% reported that this was usual staffing; 20% reported that this was reduced staffing. With regard to the day and time of error occurrence, 25% occurred on Fridays and 20% on Mondays. Sixty-three percent occurred during the afternoon hours. With regard to prescription volume, pharmacies filling 251 to 300 prescriptions daily had the highest percentage of errors (19%) followed by pharmacies filling between 151 and 200 and between 201 and 250 prescriptions daily (14.7% each;