Truelove-Witts Severity Criteria for Ulcerative Colitis

Classify UC severity using Truelove-Witts criteria: mild (<= 4 BM/day, no systemic features), moderate (between mild and severe), severe (>= 6 BM/day + systemic features). Severe UC requires hospitalisation.

Weight
Height
Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
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How It Works

Classify UC severity using Truelove-Witts criteria: mild (<= 4 BM/day, no systemic features), moderate (between mild and severe), severe (>= 6 BM/day + systemic features). Severe UC requires hospitalisation

Each component has a specific meaning:

  • Truelove-Witts criteria: mild (<= 4 BM/day — The truelove-witts criteria: mild (<= 4 bm/day recorded for the scenario being assessed.
  • No systemic features) — The no systemic features) recorded for the scenario being assessed.
  • Moderate (between mild — The moderate (between mild recorded for the scenario being assessed.
  • Severe) — The severe) recorded for the scenario being assessed.
  • Severe — The severe recorded for the scenario being assessed.

Note: Interpret the truelove-witts uc result against the thresholds and context described above.

How to Use

Enter the Truelove-Witts criteria: mild (<= 4 BM/day, no systemic features), moderate (between mild, severe), severe for the scenario you are assessing. Classify UC severity using Truelove-Witts criteria: mild (<= 4 BM/day, no systemic features), moderate (between mild and severe), severe (>= 6 BM/day + systemic features). Severe UC requires hospitalisation. Use the truelove-witts uc result to inform your calculation.

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Frequently Asked Questions