نتایج جستجو برای: instrumental variable
تعداد نتایج: 284663 فیلتر نتایج به سال:
This article considers identification and estimation of the causal effect time Z until a subject is treated on duration T. The time-to-treatment not randomly assigned, T right censored by random variable C, T∧C. endogeneity issue using an instrumental explaining independent error term model. We study in fully nonparametric framework. show that our specification generates integral equation, whic...
BACKGROUND Obesity has been shown to be associated with depression and it has been suggested that higher body mass index (BMI) increases the risk of depression and other common mental disorders. However, the causal relationship remains unclear and Mendelian randomisation, a form of instrumental variable analysis, has recently been employed to attempt to resolve this issue. AIMS To investigate...
Unobserved confounding is a well-known threat to causal inference in non-experimental studies. The instrumental variable design can under certain conditions be used to recover an unbiased estimator of a treatment effect even if unobserved confounding cannot be ruled out with certainty. For continuous outcomes, two stage least squares is the most common instrumental variable estimator used in ep...
Unobserved confounding is a well known threat to causal inference in non-experimental studies. The instrumental variable design can under certain conditions be used to recover an unbiased estimator of a treatment effect even if unobserved confounding cannot be ruled out with certainty. For continuous outcomes, two stage least squares is the most common instrumental variable estimator used in ep...
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