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Table 2 Medication error rates over the study phases

From: Using Positive Deviance to reduce medication errors in a tertiary care hospital

  Phase I - 2011 Phase II - 2012 Phase III - 2013
Prescribed medications 2,365,231 2,591,863 2,813,633
Medication errors reported 1054 1105 1854
Medication error rate (%) 0.04 0.04 0.07
Patient-days 188,242 194,353 198,534
Medication-related serious adverse events (SAE) 18 9 5
Percent of medication errors that are SAE (%) 1.7 0.8 0.3
Rate of SAE (per 100,000 patient-days) 9.6 4.6 2.5