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. 2014 Dec 3;9(12):e112479. doi: 10.1371/journal.pone.0112479

Figure 1. The y axis is the proportion of patients with a given chronic disease according to the adjusted comorbidity index.

Figure 1

The x-axis is the adjusted comorbidity index found by subtracting the weight of each disease from the patient's comorbidity index for those patients with the stated disease. Thus, a patient with an adjusted comorbidity index of 0 has only that chronic disease.