rome_iv_cyclic_vomiting_syndrome: Rome IV Diagnostic Criteria for Cyclic Vomiting Syndrome...

In cliot: Clinical Indices and Outcomes Tools

Rome IV Diagnostic Criteria for Cyclic Vomiting Syndrome (CVS)

Description

Evaluates the Rome IV diagnostic criteria for Cyclic Vomiting Syndrome (CVS). Diagnosis requires stereotypical episodes of acute onset vomiting lasting less than 1 week, occurring at least 3 times in the prior year, with absence of vomiting between episodes. Symptoms must have started at least 6 months ago and be active within the last 3 months.

Usage

rome_iv_cyclic_vomiting_syndrome(stereotypical_episodes, episode_count_12mo,
                                 episodes_separated_1wk, inter_episodic_wellness,
                                 symptom_onset_6mo, active_symptoms_3mo)

Arguments

stereotypical_episodes	Numeric (0 or 1). Are episodes stereotypical regarding onset (acute) and duration (< 1 week)? (1 = Yes).
episode_count_12mo	Numeric. Number of discrete episodes in the prior year. (Must be >= 3).
episodes_separated_1wk	Numeric (0 or 1). Did the episodes occur at least 1 week apart? (1 = Yes).
inter_episodic_wellness	Numeric (0 or 1). Is there an absence of vomiting between episodes? (1 = Yes).
symptom_onset_6mo	Numeric (0 or 1). Did symptoms onset at least 6 months ago? (1 = Yes).
active_symptoms_3mo	Numeric (0 or 1). Have criteria been fulfilled for the last 3 months? (1 = Yes).

Value

A list containing:

Diagnosis

"Criteria Met for Cyclic Vomiting Syndrome (CVS)" or "Criteria Not Met".

References

Stanghellini V, Chan FK, Hasler WL, et al. Gastroduodenal Disorders. Gastroenterology. 2016;150:1380-1392. doi:10.1053/j.gastro.2016.02.011

Examples

# Example 1: Criteria Met
# Stereotypical(1), 4 episodes, Separated(1), Wellness(1), Duration met
rome_iv_cyclic_vomiting_syndrome(1, 4, 1, 1, 1, 1)

# Example 2: Not Met (Insufficient episodes)
# Stereotypical(1), 2 episodes, Separated(1), Wellness(1), Duration met
rome_iv_cyclic_vomiting_syndrome(1, 2, 1, 1, 1, 1)

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