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U.S. Centers for Disease Control & Prevention
Instrumental variable method is useful to study self-selection mechanism
June 2nd, 2006
The instrumental variable method is useful for the study of the self-selection mechanism. Investigators in the United States conducted a study "to assess whether estimates of the effectiveness of influenza vaccination in reducing rates of hospitalizations and all-cause mortality derived from cross-sectional data could be improved by applying the instrumental variable (IV) method to data representing the community-dwelling elderly population in the United States in order to adjust for self-selection bias. A secondary data analysis was performed, using the 1996-97 Medicare Current Beneficiary Survey data." "First, using single-equation probit...
Source: Medicine & Law Weekly (2006-06-02)
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