1 Materials and methods
Use the HIS system of our hospital to retrieve information and medication records of all patients checking into our hospital from June 2019 to June 2020. The inclusion criteria: ①age ≧65 years old; ②time of hospitalization ≧48h. Exclusion criteria: ①Age<65 years; ②time of hospitalization <48h; ③Those who have been repeatedly hospitalized 2 times or more within a month; ④No drugs were used during hospitalization; ⑤Death during hospitalization; ⑥Case data are incomplete. According to the average value of the index assignment of expert evaluation in the Judgement criteria of PIM for old adults in China , the risk intensities of the drugs are classified:
(1) High-risk drugs, the old adults should avoid using them; (2) Low-risk drugs, the old adult should use with caution. Class A warning drugs are recommended for drug adjustment and intervention; the rest are classified as Class B warning drugs. According to the Judgement criteria of PIM for old adults in China , based on the frequency of medication, they are classified into Class A and Class B warning drugs. Class A warning drugs are recommended to clinicians and clinical pharmacists for priority warning.
SPSS 22.0 statistical software was used to process the data. Count data is represented by the number of cases and percentage (%), and dose data is represented by X±s.