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. 2013 Oct 12;11:271. doi: 10.1186/1477-7819-11-271

Table 1.

Baseline characteristics of patients included in the study according to body mass indexa

Characteristics
All cases
Normal weight
Overweight
P
    (BMI <23 kg/m2) (BMI ≥23 kg/m2)  
No. of patients (%)
525 (100%)
208 (39.6%)
317 (60.4%)
 
Mean age (±SD), years
63.2 ± 11.7
64.5 ± 12.4
62.4 ± 11.1
0.003
Males, n (%)
310 (59%)
113 (36.5.0%)
197 (63.5%)
0.075
Diabetes, n (%)
86 (16.4%)
25 (12.0%)
61 (19.2%)
0.029
Alcohol consumption, n (%)
129 (24.6%)
41 (19.7%)
88 (27.8%)
0.036
Smoking, n (%)
160 (30.5%)
61 (29.3%)
99 (31.2%)
0.643
CEA ≥5 ng/ml, n (%)
215 (41.0%)
87 (41.8%)
128 (40.4%)
0.741
Site, n (%)
 
 
 
3.6 × 10–4
 Rectum
287 (54.7%)
98 (47.1%)
189 (59.6%)
 
 Distal colon
116 (22.1%)
43 (20.7%)
73 (23.0%)
 
 Proximal colon
122 (23.2%)
67 (32.2%)
55 (17.4%)
 
Tumor size, n (%)
 
 
 
0.513
 <5 cm
332 (63.2%)
128 (62.5%)
204 (64.4%)
 
 ≥5 cm
193 (36.8%)
80 (38.5%)
113 (35.6%)
 
Pathological type, n (%)
 
 
 
0.166
 Adenocarcinoma
462 (88.0%)
178 (85.6%)
284 (89.6%)
 
 others
63 (12.0%)
30 (14.4%)
33 (10.4%)
 
Differentiation, n (%)
 
 
 
0.764
 Well/moderate
436 (83.0%)
174 (83.7%)
262 (82.6%)
 
 Poor
89 (17.0%)
34 (16.3%)
55 (17.4%)
 
Mean nodes analyzed (±SD)
13.6 ± 8.2
14.8 ± 9.0
12.9 ± 7.6
0.007
Lymph node-positive, N (%)
225 (42.9%)
79 (38.0%)
146 (46.1%)
0.067
Stage, n (%)
 
 
 
0.008
I
83 (15.8%)
26 (12.5%)
57 (18.0%)
 
II
192 (36.6%)
90 (43.3%)
102 (32.2%)
 
III
165 (31.4%)
53 (25.5%)
112 (35.3%)
 
IV 85 (16.2%) 39 (18.8%) 46 (14.5%)  

aBMI, body mass index; CEA, carcinoembryonic antigen.