Computational Intelligence and Neuroscience

Research Article

Early Prediction of Sepsis Based on Machine Learning Algorithm

Table 6

The meaning of the new feature variable.


Features	Based variables	Descriptions

Count	All vital signs data + all laboratory value data	The count of the measurement times of all variables till the current moment
Inspection frequency	All vital signs data + all laboratory value data	The sum of the measurement times of all variables per unit time till the current moment
2h_diff	Some vital signs variables¹	The difference between the current time and the value 2 hours ago
12h_max	Some laboratory value variables²	Maximum value in a sliding time window spanning 12 hours
12h_min		Minimum value in a sliding time window spanning 12 hours
12h_maxmin		Range in a sliding time window spanning 12 hours
24h_max		Maximum value in a sliding time window spanning 24 hours
24h_min		Minimum value in a sliding time window spanning 24 hours
24h_maxmin		Range value in a sliding time window spanning 24 hours
HR/SBP	HR,SBP	Shock index
SaO₂/FiO₂	SaO₂, FiO₂	Oxygenation index
qSOFA	Resp, SBP	qSOFA score

¹HR, MAP, O2Sat, Resp, and SBP. ²WBC, Temp, MAP, SBP, Creatinine, Platelets, FiO₂, SaO₂, PTT, BUN, Calcium, Phosphate, Hct, Lactate, AlkalinePhos, Glucose, and Hgb.