Fig. 1

Time series analysis: early ISI measurements (within 12 and 24 h). This figure shows ISI measurement transitions across three time points: upon presentation, approximately 12 h later, and approximately 24 h later. The data illustrate that patients in Bands 1 and 3 generally remain stable within the same band over the first 12 h, whereas those in Band 2 show greater variability, with transitions to either Band 1 or Band 3 by the third measurement.