Developing Prognostic Systems of Cancer Patients by Ensemble Clustering

Table 2

A list of 128 combinations based on factor levels. Here, adeno, squamous, large, and small represent adenocarcinoma, squamous cell carcinoma, large cell carcinoma, and small cell carcinoma, respectively.

Group name	Stage (𝑋1)	Grade (𝑋2)	Histology (𝑋3)	Gender (𝑋4)	Sample size
Comb 1	I	1	adeno	1	1008
Comb 2	I	1	adeno	2	1426
Comb 3	I	1	squamous	1	430
Comb 4	I	1	squamous	2	187
Comb 5	I	1	large	1	8
Comb 6	I	1	large	2	4
Comb 7	I	1	small	1	2
Comb 8	I	1	small	2	2
Comb 9	I	2	adeno	1	2389
Comb 10	I	2	adeno	2	2662
—	—	—	—	—	—
—	—	—	—	—	—
Comb 123	IV	4	squamous	1	163
Comb 124	IV	4	squamous	2	70
Comb 125	IV	4	large	1	1503
Comb 126	IV	4	large	2	911
Comb 127	IV	4	small	1	4246
Comb 128	IV	4	small	2	3368