Adverse drug reactions are appreciably harmful or unpleasant reactions resulting from an intervention related to the use of medical products, which predicts hazard from future administration and warrants prevention or specific treatment, or alteration of the dosage regimen, or withdrawal of the product. Given medical case reports extracted from MEDLINE, the task is to classify whether the case report mentions the presence of any adverse drug reaction. Classify your answers into non-adverse drug event and adverse drug event.

Ex Input:
Trichiasis associated with prostaglandin analog use.

Ex Output:
adverse drug event


Ex Input:
Laboratory investigations confirmed a metabolic acidosis (pH 7.15) and hyperchloremia.

Ex Output:
non-adverse drug event


Ex Input:
Interferon-induced psychosis as a "psychiatric contraindication" to hepatitis C treatment: a review and case-based discussion.

Ex Output:

adverse drug event