What is the purpose of the Naranjo algorithm in ADR assessment, and what is one possible outcome category?

• A. To determine the mechanism of action of the drug causing the event.
• B. To assess causality based on pharmacokinetic data alone.
• C. To estimate the likelihood that an adverse event is drug-related; outcomes include definite, probable, possible, or doubtful.
• D. To quantify the severity of the adverse event.

Answer: (C)