中文摘要：

目的了解天津市参保住院患者医疗耗材费用的变化趋势及影响因素,为控制医疗耗材费用过快增长、减轻患者负担提供依据。方法从天津市2003-2007年参保住院患者资料库中随机抽取30%的患者共282 447人次,对其医疗耗材费用情况进行回顾性分析。结果天津市2003-2007年参保住院患者医疗耗材费用在医疗费中所占比例呈上升趋势（F=82.33,P〈0.05）;次均医疗耗材费用呈逐年上升趋势（F=163.79,P〈0.05）;材料费个人自负比例呈上升趋势（F=126.92,P〈0.05）;自2005年后,制度内材料费自负比例呈下降趋势（F=94.15,P〈0.05）;多元线性回归分析结果表明,男性医疗耗材费用高于女性;住院天数长、医院级别高、病型重、住院次数多患者医疗耗材费用高;医疗耗材费用逐年升高。结论天津市参保住院患者的医疗耗材费用呈上升趋势;性别、住院天数、医院类型、病型、住院次数和年份是主要影响因素。

英文摘要：

Objective To study medical material expenditure and its impact factors amomg inpatients with medical insurance for scientific management and rational use of medical material and the reduction of medical cost.Methods Retrospective study was conducted based on a random sample of hospitalized patients with medical insurance from 2003 to 2007 in Tianjin city.Results The proportion of medical materials in medical cost raised year by year（11.11%,12.68%,14.99%,16.44%,16.14% from 2003 to 2007,respectively,F=82.33,P0.05）.Medical material expenditure per patient was 1115.62,1294.47,1509.95,1684.51,and 1821.11 RMB Yuan from 2003 to 2007,respectively,with a total growth of 63%（F=163.79,P0.05）.The proprotion of personal-paid medical material,however,showed an obviously decreased trend after the modulation of medical insurance policy since 2005.The type of hospital,the duration and times of hospitalization affected the cost of the medical material greatly.Conclusion Medical material expenditure for inpatient increased year by year.Hospital type,duration and times of hospitalization affect the cost of medical material of the inpatients.