Do I have to use weights and design based methods when calculating confidence intervals?
Yes. Sample weights must be incorporated in calculating the estimate and its standard error, and design-based methods must be used to estimate the standard error. Taylor Series Linearization is one example of a design-based method. The design variables needed to obtain estimates of standard errors through this method are provided on the demographic files for the continuous NHANES.
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- Do I have to use weights and design based methods when calculating confidence intervals?