Table 1.

Inclusion and exclusion criteria

Inclusion	Exclusion
Primary research	Audit/letters/commentaries/opinion/review articles
Patients with Chronic Functional Constipation (Obstructive defaecation and/or slow transit/IBS-C)	Studies in children (<18 years) only
Full articles published in peer-reviewed journals	Studies in neurogenic constipation only
English Language	Studies where all patients have undergone colorectal surgery (resection or rectopexy, etc.)
Retrograde irrigation using standard equipment performed at home	Studies in stoma patients only
Primary outcome is patient symptom improvement/response to treatment	Studies in antegrade irrigation only