rome_iv_functional_diarrhea: Rome IV Diagnostic Criteria for Functional Diarrhea

In cliot: Clinical Indices and Outcomes Tools

Rome IV Diagnostic Criteria for Functional Diarrhea

Description

Evaluates the Rome IV criteria for diagnosing Functional Diarrhea. Diagnosis requires the recurrent passage of loose or watery stools in more than 25% of defecations, with hard or lumpy stools in less than 25% of defecations, and criteria for Irritable Bowel Syndrome (IBS) are not met. Symptoms must have started at least 6 months ago and been active for the last 3 months.

[Image of bristol stool scale chart]

Usage

rome_iv_functional_diarrhea(loose_watery_stool_ge_25_percent,
                            hard_lumpy_stool_lt_25_percent, meets_ibs_criteria,
                            symptom_onset_ge_6_months, symptoms_active_last_3_months)

Arguments

loose_watery_stool_ge_25_percent	Numeric (0 or 1). Are loose or watery stools (Bristol Stool Form 6-7) present in >25% of bowel movements? (1 = Yes).
hard_lumpy_stool_lt_25_percent	Numeric (0 or 1). Are hard or lumpy stools (Bristol Stool Form 1-2) present in <25% of bowel movements? (1 = Yes).
meets_ibs_criteria	Numeric (0 or 1). Does the patient meet diagnostic criteria for Irritable Bowel Syndrome (IBS), specifically regarding predominant abdominal pain? (1 = Yes). Note: Meeting IBS criteria excludes Functional Diarrhea.
symptom_onset_ge_6_months	Numeric (0 or 1). Did symptom onset occur at least 6 months prior to diagnosis? (1 = Yes).
symptoms_active_last_3_months	Numeric (0 or 1). Have symptoms been present for the last 3 months? (1 = Yes).

Value

A list containing:

Diagnosis

"Criteria Met for Functional Diarrhea" or "Criteria Not Met".

References

Lacy BE, Mearin F, Chang L, et al. Bowel Disorders. Gastroenterology. 2016;150:1393-1407. doi:10.1053/j.gastro.2016.02.031

Examples

# Example 1: Diagnosis Met
# Loose stools >25%, No hard stools, No IBS, Chronic
rome_iv_functional_diarrhea(1, 1, 0, 1, 1)

# Example 2: Not Met (Meets IBS)
# Loose stools present, but IBS pain criteria also met
rome_iv_functional_diarrhea(1, 1, 1, 1, 1)

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