Trial reportGut2021
WASh multicentre randomised controlled trial: water-assisted sigmoidoscopy in English NHS bowel scope screening.
Trial report in Gut, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
4 citing papers in PubMed, 1 synthesis or guideline pooled it, 9 citations in OpenAlex.
- EFFICACY OF WATER INFUSION VERSUS AIR/CO2 INSUFFLATION FOR COLONOSCOPY: A SYSTEMATIC REVIEW AND META-ANALYSIS.Arquivos de gastroenterologia · 2026Pooled it
- Combined water exchange and cap-assisted colonoscopy reduces cecal intubation time and patient discomfort in patients with unsedated colonoscopy: a randomized controlled trial.BMC gastroenterology · 2025Trial
- Early cancer diagnosis: reaching targets across whole populations amidst setbacks.British journal of cancer · 2021Article
- Water immersion sigmoidoscopy versus standard insufflation for colorectal cancer screening: A cohort study.Saudi journal of gastroenterology : official journal of the Saudi Gastroenterology AssociationArticle
Corrections and comments
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Authors and funding
16 authors at 6 institutions in 1 country.
Funding
Abstract
objectivesThe English Bowel Cancer Screening Programme invites 55 year olds for a sigmoidoscopy (Bowel Scope Screening (BSS)), aiming to resect premalignant polyps, thus reducing cancer incidence. A national patient survey indicated higher procedural pain than anticipated, potentially impacting on screening compliance and effectiveness. We aimed to assess whether water-assisted sigmoidoscopy (WAS), as opposed to standard CO
designThe WASh (Water-Assisted Sigmoidoscopy) trial was a multicentre, single-blind, randomised control trial for people undergoing BSS. Participants were randomised to either receive WAS or CO
results1123 participants (50% women, mean age 55) were randomised (561 WAS, 562 CO
conclusionIn the context of enema-prepared unsedated screening sigmoidoscopies performed by screening-accredited endoscopists, no difference in patient-reported pain was seen when using either a CO TRIAL REGISTRATION NUMBER: ISRCTN81466870.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.