Unsupervised versus Supervised Identification of Prognostic Factors in Patients with Localized Retroperitoneal Sarcoma: A Data Clustering and Mahalanobis Distance Approach

Table 1

Distribution of patients by six relevant clinical parameters. FNCLCC (French Fédération Nationale des Centres de Lutte Contre le Cancer) grading, proliferative index (ki67 expression), and CT-RT preoperative chemo/radiotherapy treatment. For the other acronyms, see the Abbreviations section.

Feature		%
Age, median (range)	58.5	(27–75)
Sex
Female	32	45.7
Male	38	54.3
Tumor size (cm), median (range)	15	(5–45)
STS histology
WDLPS	16	22.9
DDLPS	22	31.4
LMS	15	21.4
Others	17	24.3
FNCLLC grading (missing data = 1)
G1	19	27.2
G2	32	45.7
G3	18	25.7
Response to CT-RT (missing data = 3)
SD	50	71.4
PR	8	11.4
PD	9	12.9