Table 2 Comparison between the higher BMI group and the lower BMI group
Characteristics | Higher BMI (n = 288) | Lower BMI (n = 286) | P value |
|---|---|---|---|
Age (years) | 68.6 ± 9.4 | 67.8 ± 9.7 | 0.334 |
Sex | 0.682 | ||
Male | 171 (59.4%) | 165 (57.7%) | |
Female | 117 (40.6%) | 121 (42.3%) | |
Smoking | 103 (35.8%) | 102 (35.7%) | 0.980 |
Drinking | 89 (30.9%) | 83 (29.0%) | 0.443 |
Hypertension | 188 (65.3%) | 131 (45.8%) | < 0.01* |
CHD | 42 (14.6%) | 16 (5.6%) | < 0.01* |
Family history | 12 (4.2%) | 6 (2.1%) | 0.155 |
Tumor location | 0.933 | ||
Rectum | 144 (50.0%) | 144 (50.3%) | |
Colon | 144 (50.0%) | 142 (49.7%) | |
TNM stage | 0.249 | ||
I | 56 (19.4%) | 39 (13.6%) | |
II | 115 (39.9%) | 118 (41.3%) | |
III | 97 (33.7%) | 111 (38.8%) | |
IV | 20 (7.0%) | 18 (6.3%) | |
Vessel invasion | 12 (4.2%) | 19 (6.6%) | 0.189 |
Perineural invasion | 10 (3.5%) | 6 (2.1%) | 0.317 |
Adjuvant therapy | 19 (6.6%) | 20 (7.0%) | 0.851 |
Operation time (minutes) | 232.8 ± 83.9 | 228.8 ± 85.6 | 0.577 |
Blood loss (mL) | 105.6 ± 132.0 | 183.6 ± 10.9 | 0.568 |
Retrieved lymph nodes | 14.3 ± 10.8 | 14.9 ± 7.0 | 0.439 |
Overall complications | 73 (25.3%) | 92 (32.2%) | 0.071 |
Major complications | 10 (3.5%) | 9 (3.1%) | 0.828 |
Hospital stay (days) | 12.3 ± 11.9 | 12.8 ± 10.5 | 0.562 |