Retrospective Study
Copyright ©The Author(s) 2015.
World J Gastroenterol. Jan 14, 2015; 21(2): 563-570
Published online Jan 14, 2015. doi: 10.3748/wjg.v21.i2.563
Table 1 Characteristics of patients receiving and not receiving preoperative chemoradiotherapy n (%)
No-PCRT (n = 394)PCRT (n = 500)P value
Age (yr), median (range)60 (52-68)57 (49-64)< 0.001
< 5072 (18.3)124 (24.8)
50-65183 (46.4)269 (53.8)
> 65139 (35.3)107 (21.4)
Gender0.028
Male236 (59.9)335 (67.0)
Female158 (40.1)165 (33.0)
Location< 0.001
Mid-rectum277 (70.3)175 (35.0)
Low rectum117 (29.7)325 (65.0)
Sphincter preservation358 (90.9)372 (74.4)< 0.001
Among patients with low rectum83 (70.9)203 (62.5)0.053
Clinical stage0.86
II21 (5.3)28 (5.6)
III373 (94.7)472 (94.4)
Pathologic stage1
0-83 (16.6)
I97 (24.6)128 (25.6)
II145 (36.8)135 (27.0)
III152 (38.6)154 (30.8)
Number of harvested lymph nodes16 (11-22)13 (9-17)< 0.001
Length of distal resection margin (cm)2.2 (1.4-3.3)2.4 (1.4-3.8)0.64
Adjuvant chemotherapy1321 (81.5)474 (94.8)< 0.001
Adjuvant radiotherapy116 (29.4)
Follow-up duration (mo)60 (39-80)56 (43-68)0.54