Table 3.
Components and interpretation of nutrition assessment tools
| Nutrition Assessment Tools | |||
| SGA[8,9,13] | Comprehensive RD/GI Assessment[35] | BIA[28,30] | CT Scan[9-12,29,31-34,36] |
| NAT Components | |||
| Nutrient Intake | BMI | SMP | mHUAC |
| Weight loss | GI symptoms, oral intake | FFMI | L3 SMI |
| Symptoms affecting oral intake | IBD location, severity, concurrent conditions | L4 TPA | |
| Functional capacity | Surgical history, medications | ASMI | |
| Metabolic requirement | Laboratory parameters (Albumin/Vit D/Iron/Vit B12) | SMA | |
| Physical examination | SCAI, HBS | ||
| NAT interpretation | |||
| A = Well nourished | At risk | Sarcopenia: | Sarcopenia: |
| B = Mild/moderately malnourished | Not at risk | FFMI: | mHUAC: Lowest sex quartile at level of L3 vertebrae |
| C = Severely malnourished | Men: ≤ 17 kg/m2 | L3 SMI: Lowest sex quartile, variable between studies (Male: < 42-55 cm2/m2; Female: < 35.6-41 cm2/m2) | |
| Women: ≤ 15 kg/m2 | L4 TPA: Lowest sex quartile (Male < 56.7 cm2/m2, Female: < 35.6 cm2/m2) | ||
| SMP: Continuous variable | ASMI/SMA: Continuous variable | ||
BMI: Body mass index; SCAI: Simple Colitis Activity Index; HBS: Harvey Bradshaw Score; SGA: Subjective Global Assessment; SMP: Skeletal Muscle Percentage; FFMI: Fat Free Mass Index; mHUAC: Mean Hounsfield Unit Area Calculation; ASMI: Appendicular Skeletal Muscle Index; L3 SMI: L3 Vertebrae Skeletal Muscle Index; SMA: Skeletal Muscle Area; IBD: Inflammatory bowel disease; CT: Computed tomography; RD: Registered dietitian; GI: Gastroenterologist.