Table I.
Baseline characteristics of the CRC patients stratified by BMI.
| Non-underweighta | Underweightb | ||
|---|---|---|---|
| Characteristics | n (%) | n (%) | P-value |
| Age (years) | 0.25 | ||
| <85 | 73 (82.0) | 17 (70.8) | |
| ≥85 | 16 (18.0) | 7 (29.2) | |
| Gender | 0.25 | ||
| Female | 47 (52.8) | 16 (66.7) | |
| Male | 42 (47.2) | 8 (33.3) | |
| Charlson comorbidity index | 0.060 | ||
| 0, 1 | 78 (87.6) | 17 (70.8) | |
| ≥2 | 11 (12.4) | 7 (29.2) | |
| ASA physical status | 0.19 | ||
| I, II | 63 (70.8) | 13 (54.2) | |
| III, IV | 26 (29.2) | 11 (45.8) | |
| Tumor site | 0.10 | ||
| Colon | 69 (77.5) | 14 (58.3) | |
| Rectum | 20 (22.5) | 10 (41.7) | |
| Stage | 0.45 | ||
| I, II | 66 (74.2) | 16 (66.7) | |
| III | 23 (25.8) | 8 (33.3) | |
| Histology | 0.67 | ||
| Differentiated | 83 (93.3) | 22 (91.7) | |
| Undifferentiated | 6 (6.7) | 2 (8.3) |
a
BMI≥18.5 kg/m2.
b
BMI<18.5 kg/m2. CRC, colorectal cancer; BMI, body mass index; ASA, American society of anesthesiologists.