Results 241 to 250 of about 879,817 (289)
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Epidemiology, 2006
To correct for confounding, the method of instrumental variables (IV) has been proposed. Its use in medical literature is still rather limited because of unfamiliarity or inapplicability. By introducing the method in a nontechnical way, we show that IV in a linear model is quite easy to understand and easy to apply once an appropriate instrumental ...
Martens, E.P. +4 more
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To correct for confounding, the method of instrumental variables (IV) has been proposed. Its use in medical literature is still rather limited because of unfamiliarity or inapplicability. By introducing the method in a nontechnical way, we show that IV in a linear model is quite easy to understand and easy to apply once an appropriate instrumental ...
Martens, E.P. +4 more
+6 more sources
Synthetic Instrumental Variables
SSRN Electronic Journal, 2019This paper presents a new method for synthesizing instrumental variables using only the dependent and endogenous explanatory variables of the regression model. We show that a valid instruments can be spanned using the dependent and endogenous variables.
Ratbek Dzhumashev, Tursunalieva, Ainura
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Abstract This chapter covers the instrumental variables research design. This method estimates the causal effects of an intervention by exploiting randomness in the world that influences whether someone is exposed to a phenomenon of interest.
Ian D. Gow, Tongqing Ding
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Ian D. Gow, Tongqing Ding
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1985
Recent advances in establishing the nature and scope of estimators in econometrics have shed more light on the importance of instrumental variables. In this book, the authors argue that such methods may be regarded as a strong organizing principle for a wide variety of estimation and hypothesis testing problems in econometrics and statistics.
Roger J. Bowden, Darrell A. Turkington
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Recent advances in establishing the nature and scope of estimators in econometrics have shed more light on the importance of instrumental variables. In this book, the authors argue that such methods may be regarded as a strong organizing principle for a wide variety of estimation and hypothesis testing problems in econometrics and statistics.
Roger J. Bowden, Darrell A. Turkington
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Variable frequency bioimpedance instrumentation
The 26th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2005The design of instrumentation used to measure the bioimpedance of skin or tissue is presented. An inexpensive, component level approach, appropriate for use by researchers rather that commercial applications, is emphasized. The design and implementation process is thoroughly explained and design tradeoffs are discussed with relation to various ...
D, Tsunami +4 more
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Instrumental and "Quasi-Instrumental" Variables
American Journal of Political Science, 1991The trade-off between the efficiency of an instrumental variable and its exogeneity is widely recognized but little understood. This paper specifies the terms of that trade-off by analyzing the asymptotic mean squared errors associated with the instrumental variables estimator when the instrument may not be perfectly exogenous.
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Split Sample Instrumental Variables [PDF]
, 1993 Instrumental Variables (IV) estimates tend to be biased in the same direction as Ordinary Least Squares (OLS) in finite samples if the instruments are weak. To address this problem we propose a new IV estimator which we call Split Sample Instrumental Variables (SSIV).
Joshua Angrist, Alan B. Krueger
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