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Heat maps that relate the relative risk of the reason for ICU transfer to measured values of predictors derived from cardiorespiratory monitoring. CAD = coronary artery disease, COSEn = coefficient of sample entropy (37, 38), DFA = detrended fluctuation analysis (39), EKG = electrocardiogram, HF = heart failure, HRxEDR = cross-correlation of heart rate and breathing rate derived from electrocardiogram, LDd = local density score (34), RR = respiratory rate.
