A selective review of the first 20 years of instrumental variables models in health-services research and medicine

Abstract

Background:

The method of instrumental variables (IV) is useful for estimating causal effects. Intuitively, it exploits exogenous variation in the treatment, sometimes called natural experiments or instruments. This study reviews the literature in health-services research and medical research that applies the method of instrumental variables, documents trends in its use, and offers examples of various types of instruments.     

大型企业财务共享中心建设研究——基于X联通公司案例的启示与建议

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基于食用油掺假检测方法分析

文章就现阶段大部分食用油的分类和掺杂油的种类作为切入点,浅要论述食用油掺假的主要检测方法,并提出食用油掺假检测的发展,以期促进我国食用油掺假检测方法的优化和完善。     

基于CNKI数据库的我国管理创新方法研究知识图谱

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中国出口贸易的技术结构及其变迁:1980-2003

本文旨在构建一套测度出口贸易技术结构的方法,并在SITC三位码分类水平下,从国际比较的角度,分析改革开放以来中国出口贸易的技术结构及其变迁。第一,本文建立了测度产品技术含量的一个指标,进而提出一套分析经济体出口贸易的技术结构的新方法;第二,利用本文提出的分析工具,通过国际比较,从多个方面分析了1980—2003年中国出口贸易的技术结构,结果表明:改革开放以来,中国出口贸易的整体水平得到了很大提高,但仅表现出微弱的向世界水平收敛的趋势;中国出口贸易的技术结构高度没有显著提高,但在不同时期表现出不同的趋势;中国出口贸易的技术结构分布发生了与众不同的重大变化。     

COMMERCIAL PROPERTY PRICE INDEXES AND THE SYSTEM OF NATIONAL ACCOUNTS

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