Evidence map›Paper›PMID 29637915›Full record

Observational studySaudi journal of gastroenterology : official journal of the Saudi Gastroenterology Association

The incidence of and risk factors for inadequate bowel preparation in elderly patients: A prospective observational study.

Yuan-Yuan Zhang, Mei'e Niu, Zhen-Yun Wu, Xi-Ya Wang, Yuan-Yuan Zhao, Jie Gu

Open access · diamondAbstract readObservational Study
In one paragraph

Observational study in Saudi journal of gastroenterology : official journal of the Saudi Gastroenterology Association. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
1.4field-weighted citation impact, top 15% of its field
1 · What the graph read from 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.

2 · The registry

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.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 43 citations in OpenAlex.

  1. Trial
  2. Trial
  3. Trial
  4. Article
  5. Research progress on intestinal preparation before colonoscopy.World journal of gastrointestinal endoscopy · 2025
    Review
  6. Article
  7. Is Cognitive Impairment Associated with Inadequate Bowel Preparation for Colonoscopy?Journal of the American Board of Family Medicine : JABFM · 2025
    Article
  8. Incidence and predicting factors of inadequate bowel preparation for colonoscopy: A cross-sectional study.JGH open : an open access journal of gastroenterology and hepatology · 2024
    Article
  9. An abdominal vibration combined with walking exercise (AVCWE) program for older patients with constipation: Development and feasibility study.Saudi journal of gastroenterology : official journal of the Saudi Gastroenterology Association · 2024
    Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Factors affecting bowel preparation adequacy and procedural time.JGH open : an open access journal of gastroenterology and hepatology · 2020
    Article
  16. Which Patient-Related Factors Determine Optimal Bowel Preparation?Current treatment options in gastroenterology · 2018
    Review
  17. Bowel preparation: The elderly, the hospitalized, and the colonoscope.Saudi journal of gastroenterology : official journal of the Saudi Gastroenterology Association
    Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Yuan-Yuan ZhangDepartment of Gastroenterology, The First Affiliated Hospital of Soochow University; Department of Medicine, School of Nursing, Soochow University, Suzhou, China.
Mei'e NiuDepartment of Nursing, The First Affiliated Hospital of Soochow University, Suzhou, China.
Zhen-Yun WuDepartment of Medicine, School of Nursing, Soochow University, Suzhou, China.
Xi-Ya WangDepartment of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, China.
Yuan-Yuan ZhaoDepartment of Medicine, School of Nursing, Soochow University, Suzhou, China.
Jie GuDepartment of Gastroenterology, The First Affiliated Hospital of Soochow University, Suzhou, China.
Soochow University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Background/Aim: : We conducted a prospective observational study to identify the incidence of and risk factors for inadequate bowel preparation in elderly Chinese patients. Patients and Methods: We enrolled 240 outpatients over 60 years of age scheduled for elective colonoscopy at our university hospital between November 2016 and April 2017. We recorded patient demographics, bowel preparation data, and clinical characteristics. Factors associated with inadequate bowel preparation were identified by multivariate logistical regression analysis. Results: The rate of inadequate bowel preparation was 34.6%. Factors associated with inadequate bowel preparation were a history of abdominal surgery (OR, 2.617; CI, 1.324-5.174; P = 0.006), chronic constipation (OR, 3.307; CI, 1.551-7.054; P = 0.002), non-compliance with dietary instructions (OR, 2.239; CI, 1.122-4.471; P = 0.022), non-compliance with polyethylene glycol (PEG) dosage (OR, 4.576; CI, 1.855-11.287; P = 0.001), walking <30 minutes during preparation (OR, 2.474; CI, 1.261-4.855; P = 0.008), interval between PEG ingestion and the onset of bowel activity (OR, 1.025; CI, 1.010-1.040; P = 0.001), and a last stool that was not clear and watery (OR, 4.191; CI, 1.529-11.485; P = 0.005). Conclusion: The incidence of adequate bowel preparation in elderly patients is not optimal. Walking <30 minutes during the PEG ingestion period may be a surrogate for bowel preparation failure. Future studies should identify elderly patients at risk for poor bowel preparation and develop interventions to improve outcomes in this population.

Indexed as

AgedAged, 80 and overCatharticsColonoscopyFemaleHumansIncidenceLogistic ModelsMaleMiddle AgedPatient CompliancePolyethylene GlycolsPreoperative CareProspective StudiesRisk FactorsSurveys and QuestionnairesCatharticsPolyethylene GlycolsBowel preparationcolonoscopyelderly patientsrisk factors

Identifiers

PMID29637915
PMCPMC5900479
OpenAlexW2796121824

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
Read underepoch 390

Registered trials

None linked

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.