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 Q]: Her case was complicated by social and behavioral issues.
[EX A]: non-adverse drug event

[EX Q]: RESULTS: Evidence of neurological improvement and rehabilitation potential after severe myelopathy due to intrathecal injection of doxorubicin.
[EX A]: adverse drug event

[EX Q]: Multicenter randomized study of two once daily regimens in the initial management of community-acquired respiratory tract infections in 163 children: azithromycin versus ceftibuten.
[EX A]:
non-adverse drug event