causality based on Naranjo ADR probability scale
Definite Naranjo ADR probability
Naranjo CA, Busto U, Sellers EM et al. (1981). "A method for estimating the probability of adverse drug reactions". Clin. Pharmacol. Ther. 30 (2): 239–45. doi:10.1038/clpt.1981.154. PMID 7249508.
a Naranjo ADR probability scale that shows definite causality result. It happens when the score is >=9.
Yongqun He
SCORING: ≥9 = definite; 5–8 = probable; 1–4 = possible; ≤0 = doubtful
WEB: http://livertox.nih.gov/Narajo.html