Methods The combined-variable analysis method.

方法采用集团变量的分析方法。

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DESIGN: a randomized and controlled experiment, multiple variable analysis.

设计：随机对照实验，多变量分析。

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And discusses the reason and improvement way of inefficient funds through the efficiency analysis and the differential variable analysis;

并通过效率分析和差额变数分析，探讨基金无效率的原因及优化目标；

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Instrumental variable analysis attempts to do just that, standing in contrast to the standard approach used in clinical studies.

FORBES: Why Medicaid is a Humanitarian Catastrophe

First, a brief discussion of instrumental variable analysis.

FORBES: Why Medicaid is a Humanitarian Catastrophe

Economists attempt to make the fudge factor as grounded in reality as possible, but instrumental variable analysis inevitably requires the analyst to give short shrift to the hard data and make assumptions about the differences between two populations, and how external factors (like insurance status) affect them.

FORBES: Why Medicaid is a Humanitarian Catastrophe