kruis_ibs_score: Kruis Score for Irritable Bowel Syndrome (IBS)

In cliot: Clinical Indices and Outcomes Tools

Kruis Score for Irritable Bowel Syndrome (IBS)

Description

Calculates the Kruis Score to assist in the diagnosis of Irritable Bowel Syndrome (IBS). The score differentiates IBS from organic bowel disease based on history, symptom characteristics, and basic physical/laboratory findings.

Usage

kruis_ibs_score(symptoms_triad, odd_pain_description, alternating_bowel_habits,
                duration_gt_2yr, abdominal_mass, leukocytosis, elevated_esr,
                positive_fob)

Arguments

symptoms_triad	Numeric (0 or 1). Presence of the triad: Abdominal pain, flatulence, and irregularity of bowel movements. (1 = Yes, +34 pts).
odd_pain_description	Numeric (0 or 1). Patient describes pain as "burning", "cutting", "very strong", "terrible", "feeling of pressure", "dull", "boring", or "not so bad". (1 = Yes, 0 pts; 0 = No, +23 pts).
alternating_bowel_habits	Numeric (0 or 1). Alternating constipation and diarrhea. (1 = Yes, +14 pts).
duration_gt_2yr	Numeric (0 or 1). Duration of symptoms > 2 years. (1 = Yes, +16 pts).
abdominal_mass	Numeric (0 or 1). Abdominal mass palpable on exam. (1 = Yes, 0 pts; 0 = No, +16 pts).
leukocytosis	Numeric (0 or 1). Leukocytosis (> 10,000 /uL). (1 = Yes, 0 pts; 0 = No, +16 pts).
elevated_esr	Numeric (0 or 1). ESR > 20 mm/hr (or >10 depending on lab). (1 = Yes, 0 pts; 0 = No, +13 pts).
positive_fob	Numeric (0 or 1). Positive Fecal Occult Blood test. (1 = Yes, 0 pts; 0 = No, +12 pts).

Value

A list containing:

Kruis_Score	The calculated total score.
Result	Diagnostic interpretation ("Diagnosed as IBS" if Score > 44).

References

Kruis W, Thieme C, Weinzierl M, et al. A diagnostic score for the irritable bowel syndrome. Its value in the exclusion of organic disease. Gastroenterology. 1984;87(1):1-7.

Examples

# Example 1: Likely IBS
# Symptoms triad (1), No odd pain (0), Alternating (1), >2yr (1), No mass (0), No labs (0)
# Score = 34 + 23 + 14 + 16 + 16 + 16 + 13 + 12 = 144
kruis_ibs_score(1, 0, 1, 1, 0, 0, 0, 0)

# Example 2: Possible Organic Disease
# No triad (0), Odd pain desc (1), No alternating (0), Short duration (0), Mass (1), Labs normal (0)
# Score = 0 + 0 + 0 + 0 + 0 + 16 + 13 + 12 = 41 (<=44)
kruis_ibs_score(0, 1, 0, 0, 1, 0, 0, 0)

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