mayo_uc_score: Mayo Score / Disease Activity Index (DAI) for Ulcerative...

In cliot: Clinical Indices and Outcomes Tools

Mayo Score / Disease Activity Index (DAI) for Ulcerative Colitis

Description

Calculates the Mayo Score (also known as the Disease Activity Index) for Ulcerative Colitis. This tool assesses disease severity based on four criteria: stool frequency, rectal bleeding, endoscopic findings, and the physician's global assessment.

Usage

mayo_uc_score(stool_frequency, rectal_bleeding, endoscopic_findings,
              physician_global_assessment)

Arguments

stool_frequency	Numeric (0-3). Stool frequency relative to normal. 0: Normal number of stools. 1: 1-2 stools more than normal. 2: 3-4 stools more than normal. 3: 5 or more stools more than normal.
rectal_bleeding	Numeric (0-3). Rectal bleeding. 0: No blood seen. 1: Streaks of blood with stool less than half the time. 2: Obvious blood with stool most of the time. 3: Blood alone passes.
endoscopic_findings	Numeric (0-3). Findings on endoscopy (flexible proctosigmoidoscopy). 0: Normal or inactive disease. 1: Mild disease (erythema, decreased vascular pattern, mild friability). 2: Moderate disease (marked erythema, lack of vascular pattern, friability, erosions). 3: Severe disease (spontaneous bleeding, ulceration).
physician_global_assessment	Numeric (0-3). Physician's Global Assessment. 0: Normal. 1: Mild disease. 2: Moderate disease. 3: Severe disease.

Value

A list containing:

Mayo_Score	The calculated total score (Range 0-12).
Disease_Activity	Interpretation of disease severity (Remission, Mild, Moderate, Severe).

References

Schroeder KW, Tremaine WJ, Ilstrup DM. Coated oral 5-aminosalicylic acid therapy for mildly to moderately active ulcerative colitis. N Engl J Med. 1987;317(26):1625-1629. doi:10.1056/NEJM198712243172603

Examples

# Example 1: Moderate Activity
# Freq +1 (1), Bleeding +1 (1), Endo Moderate (2), PGA Moderate (2)
# Score = 6
mayo_uc_score(1, 1, 2, 2)

# Example 2: Severe Activity
# Freq +3 (3), Blood alone (3), Endo Severe (3), PGA Severe (3)
# Score = 12
mayo_uc_score(3, 3, 3, 3)

cliot documentation built on Dec. 1, 2025, 1:06 a.m.