Figure 2.

Visual comparison of ICU patient characteristics for each data set. A, Mean frequency of vital sign measurements per patient per hour. B, Mean frequency of laboratory measurements per patient per day. C, Percentage of patients receiving invasive treatments. D, Number of patients by reason for admission (green) and urgency of admission (blue). Standard deviations are available from Supplementary Table 2 (http://links.lww.com/CCM/H85). ALAT = alanine aminotransferase, AmsterdamUMCdb = Amsterdam University Medical Center data base, APACHE = Acute Physiology and Chronic Health Evaluation, CRP = C-reactive protein, eICU-CRD = eICU Collaborative Research Database, HiRID = High time-resolution intensive care unit dataset, MIMIC = Medical Information Mart for Intensive Care, PEEP = positive end-expiratory pressure, RRT = renal replacement therapy.