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Motivated by objective measurements of physical activity, we take a functional data approach to longitudinal data with simultaneous measurement of a continuous and a binary outcomes. The regression structures are specified as smooth curves measured at various time‐points with random effects that have a hierarchical correlation structure. The random effect curves for each variable are summarized using...
It is of interest to estimate the distribution of usual nutrient intake for a population from repeat 24‐h dietary recall assessments. A mixed effects model and quantile estimation procedure, developed at the National Cancer Institute (NCI), may be used for this purpose. The model incorporates a Box–Cox parameter and covariates to estimate usual daily intake of nutrients; model parameters are estimated...
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