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. Author manuscript; available in PMC: 2013 Jun 5.
Published in final edited form as: Intensive Care Med. 2009 Jul 9;35(11):1886–1892. doi: 10.1007/s00134-009-1573-6

Figure 1.

Figure 1

Odds of transitioning to delirium according to tryptophan/large neutral amino acids ratio. The odds of transitioning from any mental state (normal, delirious, or comatose) to delirium are higher at very small Trp/LNAA ratios, lower when the ratio is approximately 0.2 and then increase as the Trp/LNAA ratio increases.