fmixed: A SAS Macro for Smoothing-Spline-Based Functional Mixed Effects Models

Ziyue Liu, Wensheng Guo

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In this article we implement the smoothing-spline-based functional mixed effects models (Guo 2002) by a SAS macro by exploiting the connection between mixed effects models and smoothing splines. The macro can handle flexible design matrices and is easy to use. Input parameters and output results are described and explained. A numeric example and a real data example are used for illustration.

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