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. 2019 Feb 21;9(1):174–179. doi: 10.15171/apb.2019.020

Table 4. Classification of medication errors based on their clinical significance (n = 233) .

Clinical significance Definition 9 No. of errors (%)
No error Category A: circumstances for events that have the capacity to cause error 15 (6.5)
Error, No harm Category B: An error occurred but the error did not reach the patient 34 (14.6)
Category C: An error occurred that reached the patient but did not cause patient harm 138 (59.2)
Category D: An error occurred that reached the patient and required monitoring to confirm that it resulted in no harm to the patient and/or required intervention to preclude harm 46 (19.7)
Error, Harm Category E: An error occurred that may have contributed to or resulted in temporary harm to the patient and required intervention 0 (0)
Category F: An error occurred that may have contributed to or resulted in temporary harm to the patient and required initial or prolonged hospitalization 0 (0)
Category G: An error occurred that may have contributed to or resulted in permanent patient harm 0 (0)
Category H: An error occurred that required intervention necessary to sustain life 0 (0)
Error, Death An error occurred that may have contributed to or resulted in patient death 0