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Increasing kynurenine/tryptophan ratios are associated with fewer delirium/coma-free days. Interpretative example: Other covariates being equal, patients with a kynurenine/tryptophan ratio at the 75th percentile (0.6 in this population) had an average of 2.1 fewer delirium/coma-free days than patients with a kynurenine/tryptophan ratio at the 25th percentile (0.1).
