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A sparse matrix is a matrix where many of the elements are zeros. The tag can also be used for sparsity in other contexts, such as regression models with sparsity, or the "bet on sparsity"-principle.

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Longitudinal study - generalised linear mixed model - dealing with very wide confidence inte...

I am conducting a treatment evaluation using administrative data. It is a population-based study of all people diagnosed with a specific disorder in two calendar years (N = 2300). I have run a GLMM us …
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