Table 4. Causality and avoidability assessments of the adverse drug reactions in hospital in-patients.

Assessment	Category	Frequency of ADRs (n; %)*
Causality	Definite	23 (3.1)
	Probable	487 (66.5)
	Possible	223 (30.4
Avoidability	Definite	47 (6.4)
	Possible	344 (46.9)
	Unavoidable	342 (46.7)

^*Denominator used was the total number of ADRs, n = 733.