| ANOVA | analysis of variance |
| ASA | American Society of Anesthesiologists |
| BIA | bioelectrical impedance analysis |
| BMI | body mass index |
| ERAS | enhanced recovery after surgery |
| ESPEN | The European Society of Parenteral and Enteral Nutrition |
| FFM | fat-free body mass |
| FM | fat mass |
| GI | gastrointestinal |
| GLIM | Global Leadership Initiative on Malnutrition |
| HGS | handgrip strength |
| LOS | length of stay |
| NICE | National Institute for Health and Care Excellence |
| ONS | oral nutritional supplements |
| SD | standard deviation |
| TBW | total body water |