Method; Foxpro6. 0 database system was utilized to calculate category, cost and combined usage of drugs in the year of 2003. Defined Daily Dose (DDD) recommended by WHO was adopted to analyze the drug use condition in the clinic.

• 方法:利用Foxpro6.；0数据库系统；统计2003年医疗保险住院用药品种、金额和抗菌药联用。 采用WHO推荐的限定日剂量方法分析药物的临床使用情况。