Potentially inappropriate prescribing and drug-drug interactions among elderly Chinese nursing home residents in Macao.

Background: The ageing of the population has become a concern all over the world, including Macao. In general, older people are more prone to adverse drug events which can result from potentially inappropriate medication (PIM) use and drug-drug interactions (DDIs).

Objective: This study was designed to evaluate the prevalence of PIM use and DDIs among elderly nursing home residents in Macao, and to find out the factors associated with these drug-related problems.