ABSTRACT Objective::To understand some basic characteristics in gender, types of drugs, drug dosage form, and other aspects to provide reference for drug safety monitoring, and guiding rational drug use when adverse drug reaction (ADR) occurred to patients of different ages. Methods:12 249 ADR cases came from the collection of National Adverse Drug Reaction Monitoring Center database reported by a 3A hospital from 2005 to 2012. The patients were divided into nine age groups to conduct the analysis of gender, types of drugs, drug dosage form, route of administration, ADR involving organ / system and ADR severity indexes analysis. Results:There were 6 496 male cases (53.03%) and 5 753 female cases (46.97%) of 12 249 ADR cases. Male to female ratio was 1.13∶1.41 to 50, 51 to 60 and 61 to 70 age groups lay in the top three in ADR constituent ratios. In the 21 to 50 age group, the females were more than the males in the number of ADR cases, and the males were more than the females in the the number of ADR cases of the remaining age group. Anti infective drugs (31.59%), anticancer drugs (28.86%), traditional Chinese medicine (7.15%) causing ADR remained in the top three, while <10 age group ADRs caused by anti infective drugs were 972 cases (7.79%), 41 to 70 age group ADR cases caused by anticancer drugs were 2 362 cases(18.94%), and 475 cases (3.81%) were caused by traditional Chinese medicine. Injection (79.41%), tablets (8.40%) and powder for injection (5.61%) causing ADRs were included in the top three, while injection, tablets and powder for injection causing ADRs were mainly taken by the 41 to 70 years old age group. Capsules causing for injection ADR were mainly taken by the 31 to 70 years old age group, and granules, suspensions, solutions causing ADR were mainly taken by the <10 year old patients. Intravenous infusion (73.04%), oral administration (13.51%), intravenous injection (6.06%) appeared in the top three, while intravenous, oral administration and intravenous injections causing ADR cases were mainly related to the 41 to 70 years old age group. The number of cases caused by ADR intramuscular injection was related to the 31 to 60 years old age group. The damages caused by ADRs to the digestive system (33.15%), skin and its appendages(19.25%) and nervous system (11.58%) ranked at the top three, while digestive system, nervous system and systemic damage caused by ADR cases were related the 41 to 70 years old age group. General ADRs reached 7 757 cases (63.33%), and new ADRs and serious ADRs reached 4 492 cases (36.67%).The general ADRs and new ADR were mainly related to the 41 to 70 years old age group. Serious ADR and new serious ADR were mainly related to the 31 to 70 years old age group. Conclusion:Because the occurrence to different ages of ADR patients had their differences in gender, types of drugs, drug dosage and so on, the drug safety monitoring work of different age groups should be strengthened and attention should be paid to the impact factors to reduce the incidence of ADR as far as possible. |