A Novel Ensemble-Based Technique for the Preemptive Diagnosis of Rheumatoid Arthritis Disease in the Eastern Province of Saudi Arabia Using Clinical Data

Table 5

Comparison of the results using forward feature selection.

Features	Classifier	Number of features	Features selected	Test accuracy
Experiment 1
Forward selection	SVM	15	{Sex, age, MCHC, RDW, platelet count, HGB, HCT, NEU%, LYMPH%, BASO#, NEU#, MONO#, chloride, anion gap, SGPT}	89.55%
	LR	30	{Sex, age, MCV, MCHC, RDW, platelet count, MPV, HGB, HCT, WBC, RBC, MONO%, EOS%, NEU%, LYMPH%, BASO%, BASO#, sodium, NEU#, LYMPH#, MONO#, EOS#, potassium, chloride, CO2, anion gap, GGTP, ALP, SGOT, SGPT}	91.04%
	Adaboost	19	{Sex, age, MCV, platelet count, MPV, RBC, MONO%, EOS%, NEU%, BASO%, sodium, LYMPH#, EOS#, potassium, chloride, anion gap, GGTP, SGOT, SGPT}	88.81%
	Voting	30	{Sex, age, MCH, MCV, MCHC, RDW, platelet count, MPV, HGB, HCT, WBC, RBC, MONO%, EOS%, NEU%, LYMPH%, BASO%, BASO#, sodium, NEU#, LYMPH#, MONO#, EOS#, potassium, chloride, CO2, anion gap, GGTP, ALP, SGOT}	94.03%
Experiment 2
Forward selection	SVM	16	{Sex, age, platelet count, MPV, HCT, EOS%, NEU%, LYMPH%, BASO%, BASO#, sodium, NEU#, EOS#, potassium, chloride, SGOT}	88.81%
	LR	20	{Sex, age, MCHC, RDW, platelet count, MPV, HGB, HCT, WBC, RBC, BASO%, SODIUM, NEU#, MONO#, potassium, CO2, anion gap, GGTP, ALP, SGPT}	93.28%
	Adaboost	6	{Sex, age, MPV, HGB, MONO%, BASO#}	85.82%
	Voting	29	{Sex, age, MCH, MCV, MCHC, RDW, platelet count, HGB, HCT, WBC, RBC, MONO%, EOS%, NEU%, LYMPH%, BASO%, BASO#, SODIUM, NEU#, MONO#, EOS#, potassium, chloride, CO2, anion gap, GGTP, ALP, SGOT, SGPT}	91.04%