Table 3.

Performance comparison of classification models for patients’ reported as NA.

Model	Accuracy	Precision	Sensitivity	Specificity	Model	Accuracy	Precision	Sensitivity	Specificity
VIF-based feature subset					VIF-based feature subset and location-based features
ANN	0.46	0.37	0.5	0.44	ANN	0.53	0.44	0.66	0.44
KNN	0.6	0.5	0.66	0.55	KNN	0.6	0.5	0.33	0.77
RFC	0.46	0.37	0.5	0.44	RFC	0.53	0.44	0.66	0.44
PCA-based feature subset					PCA-based feature subset and location-based features
ANN	0.65	0.25	0.72	0.25	ANN	0.65	0.33	0.75	0.33
KNN	0.53	0.42	0.5	0.55	KNN	0.6	0.5	0.33	0.77
RFC	0.6	0.5	0.5	0.66	RFC	0.66	0.57	0.66	0.66