Figure 1: Information stored in free text of EHRs.
From: Analysis of free text in electronic health records for identification of cancer patient trajectories
(A) Patient events in terms of symptoms and diseases (blue), drugs, medication (magenta) and surgical procedures (orange) accumulated over time in the EHRs. (B) The most common symptoms and diseases. (C) The most common drugs and medication and (D) the most common surgical procedures.
