rome_iv_functional_constipation: Rome IV Diagnostic Criteria for Functional Constipation

In cliot: Clinical Indices and Outcomes Tools

Rome IV Diagnostic Criteria for Functional Constipation

Description

Evaluates the Rome IV criteria for diagnosing Functional Constipation in adults. Diagnosis requires the presence of at least two of the six specified symptoms in at least 25% of defecations (over the last 3 months with symptom onset at least 6 months prior) AND the absence of sufficient criteria for Irritable Bowel Syndrome (IBS).

Usage

rome_iv_functional_constipation(stool_frequency_lt_2_week, straining_ge_25_percent,
                                lumpy_hard_stool_ge_25_percent,
                                sensation_incomplete_evacuation_ge_25_percent,
                                sensation_anorectal_blockage_ge_25_percent,
                                manual_maneuver_ge_25_percent,
                                loose_stool_absent, sufficient_criteria_met)

Arguments

stool_frequency_lt_2_week	Numeric (0 or 1). Less than 3 spontaneous bowel movements per week. (1 = Yes).
straining_ge_25_percent	Numeric (0 or 1). Straining during at least 25% of defecations. (1 = Yes).
lumpy_hard_stool_ge_25_percent	Numeric (0 or 1). Lumpy or hard stools (Bristol Stool Form Scale 1 or 2) in at least 25% of defecations. (1 = Yes).
sensation_incomplete_evacuation_ge_25_percent	Numeric (0 or 1). Sensation of incomplete evacuation in at least 25% of defecations. (1 = Yes).
sensation_anorectal_blockage_ge_25_percent	Numeric (0 or 1). Sensation of anorectal obstruction/blockage in at least 25% of defecations. (1 = Yes).
manual_maneuver_ge_25_percent	Numeric (0 or 1). Manual maneuvers to facilitate at least 25% of defecations (e.g., digital evacuation, support of the pelvic floor). (1 = Yes).
loose_stool_absent	Numeric (0 or 1). Loose stools are rarely present without the use of laxatives. (1 = Yes). This is a required exclusion of IBS-D.
sufficient_criteria_met	Numeric (0 or 1). Do at least two of the six bulleted criteria (Q1-Q6) occur? (1 = Yes).

Value

A list containing:

Diagnosis	"Criteria Met for Functional Constipation" or "Criteria Not Met".
Criteria_Count	The number of positive criteria out of the six specified symptoms.

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
# <3 stools/week, Straining, Hard stools,
#Incomplete evacuation. No loose stools. Sufficient criteria met.
rome_iv_functional_constipation(1, 1, 1, 1, 0, 0, 1, 1)

# Example 2: Not Met (Loose stools present)
# All criteria met except loose stools are present (0)
rome_iv_functional_constipation(1, 1, 1, 0, 0, 0, 0, 1)

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