Prognostic Factors and a Nomogram Predicting Overall Survival and Cancer-Specific Survival for Patients with Collecting Duct Renal Cell Carcinoma

Table 1

The clinicopathologic characteristics of our study cohort.

Variable	All cohort ()
Sex
Male	223 (68.8)
Female	101 (31.2)
Age (years), IQR	61.5 (53~72)
Year of diagnosis
2004~2009	191 (59.0)
2010~2015	133 (41.0)
Marital status
Unmarried	113 (34.9)
Married	199 (61.4)
Unknown	12 (3.7)
Race
White	227 (70.1)
Black	73 (22.5)
Others	24 (7.4)
Tumor size (cm), IQR	6 (4~8.43)
Tumor side
Left	169 (52.2)
Right	155 (47.8)
Tumor grade
G1	10 (3.1)
G2	37 (11.4)
G3	122 (37.7)
G4	83 (25.6)
Gx	72 (22.2)
T stage
T1	97 (29.9)
T2	18 (5.6)
T3	122 (37.7)
T4	83 (25.6)
Tx	4 (1.2)
N stage
N0	198 (61.1)
N1	116 (35.8)
Nx	10 (3.1)
M stage
M0	205 (63.3)
M1	115 (35.5)
Mx	4 (1.2)
AJCC stage
I	80 (24.7)
II	14 (4.3)
III	66 (20.4)
IV	158 (48.8)
Unknown	6 (1.8)
Surgical type
Without	44 (13.6)
NSS	20 (5.1)
RN	260 (81.3)
Radiotherapy
Without	288 (88.9)
With	36 (11.1)
Chemotherapy
Without	236 (72.8)
With	88 (27.2)
Follow-up time (months) IQR	17 (6~55.8)
Endpoint
Death	249 (76.9)
Cancer-specific death	208 (64.2)

IQR: interquartile range.