Retrospective Study
Copyright ©The Author(s) 2018.
World J Gastroenterol. Mar 7, 2018; 24(9): 1022-1034
Published online Mar 7, 2018. doi: 10.3748/wjg.v24.i9.1022
Table 1 Characteristics of patients and tumors
VariableNo. of patients, n (%) n = 449
Race
White321 (71.5)
Black35 (7.8)
Other93 (20.7)
Sex
Male286 (63.7)
Female163 (36.3)
Age at diagnosis, in yr
≤ 60128 (28.5)
60-70171 (38.1)
> 70150 (33.4)
Marital status
Married302 (67.3)
Divorced33 (7.3)
Separated or single58 (12.9)
Widowed40 (8.9)
Unknown16 (3.6)
Year of diagnosis
2004-2010110 (24.5)
2011-2012160 (35.6)
2013-2014179 (39.9)
Tumor size, in mm
≤ 20203 (45.2)
20-50191(42.5)
> 5015 (3.3)
Unknown40 (8.9)
Grade
Well differentiated54 (12.0)
Moderately differentiated204 (45.4)
Poorly differentiated158 (35.2)
Undifferentiated3 (0.7)
Unknown30 (6.7)
Stage
IA44 (9.8)
IB60 (13.7)
IIA89 (19.8)
IIB161 (35.9)
III95 (21.2)
T stage
T149 (10.9)
T285 (18.9)
T3220 (49.0)
T495 (21.2)
pN stage
pN0226 (50.3)
pN1223 (49.7)
Surgery type
Local excision102 (22.7)
Extensive surgery347 (77.3)
Adjuvant radiotherapy
No/Unknown radiotherapy298 (66.3)
Beam radiation151 (33.7)
Adjuvant chemotherapy
No/Unknown chemotherapy204 (45.4)
Chemotherapy performed245 (54.6)
No. of LNs retrieved
1-10196 (43.7)
11-20151 (33.6)
> 20102 (22.7)