中国循证医学杂志

中国循证医学杂志

基于 14 431 例黑龙江省居民调查数据的自购药需求弹性的研究

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目的 测算城乡居民自购药利用与支出的需求价格弹性与需求收入弹性,分析居民自购药利用和支出对自购药品价格、居民收入和医疗机构就诊价格变动的灵敏性。 方法 数据来源于黑龙江省 2013 年第五次卫生服务调查。应用 Probit 模型获得自购药利用回归模型中控制变量的偏回归系数,通过偏回归系数进一步测算居民自购药利用的需求弹性,应用对数回归模型获得自购药支出需求弹性。 结果 共纳入 5 289 户(14 431 人)。黑龙江省居民自购药利用的需求自价格弹性为 0.374(P=0.000),自购药利用与就诊服务的交叉价格弹性为–0.184(P=0.000),收入弹性为 0.083(P=0.172)。自购药支出的自价格弹性为 0.675(P=0.000),收入弹性为 0.144(P=0.069)。 结论 黑龙江省居民自购药的利用缺乏价格弹性,属于必需品。居民自购药利用与医疗机构就诊之间存在互补关系。

Objective To estimate the elasticity of demand price elasticity and demand income of urban and rural residents’ self-purchase drug use and expenditure, and to analyze the sensitivity of self-purchase drug use and expenditure to the price change of drug purchase, resident income and medical institutions. Methods The data were derived from the fifth health service survey in Heilongjiang province in 2013. The Probit model was used to obtain the partial regression coefficients of the control variables in the regression model, and the demand elasticity of the self-purchase drug use was further measured by the partial regression coefficients, and the demand elasticity of self-purchase expenditure was obtained by using the logarithmic regression model. Results A total of 5 289 households (14 431 persons) were included. The demand for self-purchase drug use of Heilongjiang province was 0.374 (P=0.000), the cross-price elasticity of self-purchase drug utilization and service was –0.184 (P=0.000), and the income elasticity was 0.083 (P=0.172). Since the price elasticity of the self-purchase drug expenditure was 0.675 (P=0.000), the income elasticity was 0.144 (P=0.069). Conclusion The use of self-purchased drugs in Heilongjiang province lacks price elasticity and is a necessity. There is a complementary relationship between the use of self-purchase drugs and medical institutions.

关键词: 自购药; 自价格弹性; 收入弹性; 交叉弹性

Key words: Self-purchase medicine; Self-price elasticity; Income elasticity; Cross elasticity

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