Validity of Machine Learning in Detecting Complicated Appendicitis in a Resource-Limited Setting: Findings from Vietnam

Table 1

Data structure used in data analysis.

Variable	Type	Unit	Description
Age	Numeric	Year	Range: 11 - 91
Gender	Binary		1=male; 0=female
White blood cell count (WBC)	Numeric	10^3 cell/mm^3	Range: 1.80 - 29.21
Neutrophil	Numeric	10^3 cell/mm^3	Range: 1.58 - 27.47
Lymphocyte	Numeric	10^3 cell/mm^3	Range: 0.18 - 8.10
Neutrophil lymphocyte ratio (NLR)	Numeric		Range: 0.40 - 65.04
C-reactive protein (CRP)	Numeric	mg/L	Range: 0.2 - 420.3
Diameter of appendix on ultrasound	Numeric	mm	Range: 1 - 80
Appendix position on ultrasound	Binary		1=right lower abdominal quadrant; 0=other positions
Infiltration on ultrasound	Binary		1=yes; 0=no
Abdominal fluid on ultrasound	Binary		1=yes; 0=no
Complicated appendicitis	Binary		1=yes; 0=no