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. Author manuscript; available in PMC: 2021 Mar 1.
Published in final edited form as: J Cardiothorac Vasc Anesth. 2019 Sep 30;34(3):616–621. doi: 10.1053/j.jvca.2019.09.035

Table 3.

Predictive ability complexity index, frailty, STS risk score and complexity index combined with STS risk score towards of 48 hour ICU length of stay

Indices C-statistic*
MSEΣ- SAP 0.61 [0.55,0.68]
MSEΣ- MAP 0.59 [0.53,0.65]
Frailty Score 0.59 [0.54,0.64]
STS 0.64 [0.58, 0.70]
STS + MSEΣ - SAP 0.65 [0.58, 0.71]
STS + MSEΣ - MAP 0.64. [0.58,0.71]
*

C-statistic, concordance statistic values with 95% confidence intervals, adjusted for age and gender

MSEΣ = complexity index, the sum of entropy values from scales 1 to 5;

SAP = systolic arterial pressure; MAP = mean arterial pressure; STS = society of thoracic surgeons