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| | DRHA | If the patient is admitted to the hospital due to one or more than one of the following potential DRPs: (1) untreated indications, (2) improper drug selection, (3) subtherapeutic dosage, (4) failure to receive drugs, (5) overdosage, (6) ADRs, (7) drug interactions, (8) drug use without indication, and (9) noncompliance [4, 16] | | Non-DRHA | If (a) the admission is due to infection and previously undiagnosed disease, (b) the admission is due to the progression of the previously diagnosed disease, (c) the admission is due to physical trauma, substance intoxication, social circumstances, and allergies not related to medications [4, 16] | | Definitely preventable | If the patient did not take a drug that is known to reduce or prevent the symptoms according to the prescriber directions, had a known allergy to the medication, had a disease for which the drug was contraindicated, and took a drug that was not indicated | | Potentially preventable | If adequate monitoring prevents DRPs with reasonable time | | Not preventable | If the drug event could not have been avoided by any reasonable means, or it was an unpredictable event in the course of treatment fully in accordance with good medical practice [3, 30] | | Severity | Severity was considered as “mild,” if the laboratory abnormality or symptom was not requiring treatment; “moderate,” if the laboratory abnormality or symptom was requiring treatment or admission to hospital or resulting in nonpermanent disability, and “severe,” if abnormality or symptom that was life-threatening or resulted in a permanent disability or fatal [31, 32] | | Duration of pharmacotherapy | The length of period that a patient stayed on drug treatment |
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