Building a knowledge base for colorectal cancer patient care using formal concept analysis

Table 4 Concepts in the context of colorectal cancer patients

Concept	Attribute set	Number Of Objects
C2	IIIB	530
C3	LNR_H	663
C4	LNR_H, IIIB	278
C5	LNR_L	1779
C6	Lv_Y	109
C7	Lv_Y, IIIB	31
C8	Lv_Y, LNR_H	66
C9	Lv_Y, LNR_L	43
C10	Lv_N	2333
……	……	……
C31736	Age_L, Degre_L, MAd, T3, N0, Lym_H, CEA_H, Ca199_H, Lv_N, LNR_L, IIA	1 (1823)**
C31737	Age_L, Degre_L, MAd, T3, N0, Lym_H, CEA_H, Ca199_L, Lv_N, LNR_L, IIA	2 (549, 831)**
C31738	Age_L, Degre_L, MAd, T3, N0, Lym_H, CEA_L, Ca199_L, Lv_N, LNR_L, IIA	2 (411,569)**
C31739	Age_L, Degre_L, MAd, T2, N0, Lym_L, CEA_L, Ca199_L, Lv_N, LNR_L, I	1 (980)**
C31740	Age_L, Degre_L, MAd, T1, N0, Lym_H, CEA_L, Ca199_L, Lv_N, LNR_L, I	1 (772)**

*Age_L: age < 60, Age_M: age 60 to 70, Age_H: age > 70; Degre_L: degree of cell differentiation (differentiation level) poor, Degre_M: degree of cell differentiation moderate, Degre_H, degree of cell differentiation well; MAd, mucinous adenocarcinoma, adenocarcinoma; Lym_L, lymph nodes < 10, LymH, lymph nodes ≥ 10; CEA_L, carcinoembryonic antigen level low, CEA_H, carcinoembryonic antigen level high; Ca199_L, cancer antigen 19-9 low, Ca199_H, cancer antigen 19-9 high; Ly_N, no lymph vascular invasion, Ly_Y, lymph vascular invasion occurred
**Within the brackets are the IDs of the patients, for example, 549 represents patient549

ISSN: 1472-6947