Table 1 Baseline characteristics of patients included in the study according to body mass index a
From: Association of body mass index and smoking on outcome of Chinese patients with colorectal cancer
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%) |