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Table. 1.

Table. 1.

Causality assessment using Naranjo scale

  QuestionAnswerScore
Are there previous conclusive reports on this reaction?Yes+1
Did the adverse event appear after the suspected drug was administered?Yes+2
Did the adverse reaction improve when the drug was discontinued, or a specific antagonist was administered?Yes+1
Did the adverse reaction reappear when the drug was re-administered?Do not know0
Are there alternative causes (other than the drug) that could on their own have caused the reaction?No+2
Did the reaction reappear when a placebo was given?Do not know0
Was the drug detected in the blood (or other fluids) in concentrations known to be toxic?Do not know0
Was the reaction more severe when the dose was increased or less severe when the dose was decreased?Do not know0
Did the patient have a similar reaction to the same or similar drugs in any previous exposure?No0
Was the adverse event confirmed by any objective evidence?Do not know0

Total score+6

Causality evaluationProbable

Highly Probable: 9, Probable: 5-8, Possible: 1-4, Doubtful: 0

Korean J Clin Pharm 2019;29:133-7 https://doi.org/10.24304/kjcp.2019.29.2.133
© 2019 Korean J Clin Pharm