Figure 4.

“Dominant topic” chord plot representing the co-occurrence of EHR topics within individual computable clinical signatures. The 42 topics are arrayed on the periphery with the width of each band representing the number of patients with that topic being their dominant or second topic in the clinical signature. Each line represents a single hospitalization connecting a dominant topic (bands around the periphery and lines arising from the bands of the same color) to the next topic (endpoint of the line with different color than the adjacent band). The width of the lines represents the number of hospitalizations with that same co-occurrence as the dominant and second topics in their clinical signature.

Abbreviations: AbdPain, abdominal pain; ACS, acute coronary syndrome; AFib, atrial fibrillation; AKI, acute kidney injury; CHF, congestive heart failure; COPD, chronic obstructive pulmonary disease; DKA, diabetic ketoacidosis; FTT, failure to thrive; GIBleed, gastrointestinal bleeding; NIPPV, non-invasive ventilation; Osteo, osteomyelitis; PNA, pneumonia; UTI, urinary tract infection.