A Systematic Review of Patient Inflammatory Bowel Disease Information Resources on the World Wide Web
Abstract
BACKGROUND AND AIMS: The Internet is a widely used information resource for patients with inflammatory bowel disease, but there is variation in the quality of Web sites that have patient information regarding Crohn's disease and ulcerative colitis. The purpose of the current study is to systematically evaluate the quality of these Web sites. METHODS: The top 50 Web sites appearing in Google using the terms "Crohn's disease" or "ulcerative colitis" were included in the study. Web sites were evaluated using a (a) Quality Evaluation Instrument (QEI) that awarded Web sites points (0-107) for specific information on various aspects of inflammatory bowel disease, (b) a five-point Global Quality Score (GQS), (c) two reading grade level scores, and (d) a six-point integrity score. RESULTS: Thirty-four Web sites met the inclusion criteria, 16 Web sites were excluded because they were portals or non-IBD oriented. The median QEI score was 57 with five Web sites scoring higher than 75 points. The median Global Quality Score was 2.0 with five Web sites achieving scores of 4 or 5. The average reading grade level score was 11.2. The median integrity score was 3.0. CONCLUSIONS: There is marked variation in the quality of the Web sites containing information on Crohn's disease and ulcerative colitis. Many Web sites suffered from poor quality but there were five high-scoring Web sites.
Integrity signals
Registry
Cites
Statistics
Claims the paper makes
Claims other papers make about this one
Each is checked against this paper’s own text: does it say what the citing paper says it does?
The Global Quality Score (GQS) is a widely validated 5-point Likert scale originally developed for patient-facing web-based health content and subsequently validated for short-form video health content analyses.
“The Global Quality Score (GQS), a widely validated 5-point Likert scale (1 = poor to 5 = excellent) originally developed to evaluate the overall educational quality of patient-facing web-based health content and subsequently validated for use in short-form video health content analyses20–24”
Cites
Charnock, D., Shepperd, S., Needham, G., & Gann, R. (1999) · Journal of Epidemiology and Community Health · doi:10.1136/jech.53.2.105 · Cited by 3,329 · see citing works
Chen, L., Li, N., & Ye, H. (2012) · Hepatogastroenterology · doi:10.5754/hge12469 · Cited by 3,199 · see citing works
Analysis of a very large web search engine query log
Silverstein, C. D., Marais, H., Henzinger, M. R., & Moricz, M. (1999) · ACM SIGIR Forum · doi:10.1145/331403.331405 · Cited by 1,153 · see citing works
Patients’ use of the internet for medical information
Diaz, J. A., Griffith, R. A., Ng, J. J., Reinert, S. E., Friedmann, P. D., & Moulton, A. W. (2002) · Journal of General Internal Medicine · doi:10.1046/j.1525-1497.2002.10603.x · Cited by 1,032 · see citing works
Patients as partners in managing chronic disease
Holman, H. R. (2000) · BMJ · doi:10.1136/bmj.320.7234.526 · Cited by 691 · see citing works
Impicciatore, P., Pandolfini, C., Casella, N., & Bonati, M. R. (1997) · BMJ · doi:10.1136/bmj.314.7098.1875 · Cited by 622 · see citing works
(2005) · PubMed · Cited by 562 · see citing works
How the internet affects patients' experience of cancer: a qualitative study
Ziébland, S., Chapple, A., Dumelow, C., Evans, J., Prinjha, S., & Rozmovits, L. (2004) · BMJ · doi:10.1136/bmj.328.7439.564 · Cited by 493 · see citing works
The Health On the Net Code of Conduct for medical and health Websites
Boyer, C., Selby, M., Scherrer, J. R., & Appel, R. D. (1998) · Computers in Biology and Medicine · doi:10.1016/s0010-4825(98)00037-7 · Cited by 430 · see citing works
Analysis of Cases of Harm Associated With Use of Health Information on the Internet
Crocco, A. (2002) · JAMA · doi:10.1001/jama.287.21.2869 · Cited by 275 · see citing works
Quality of Life in Patients with Inflammatory Bowel Disease
Mitchell, A., Guyatt, G. H., Singer, J., Irvine, E. J., Goodacre, R. L., Tompkins, C., Williams, N., & Wagner, F. (1988) · Journal of Clinical Gastroenterology · doi:10.1097/00004836-198806000-00014 · Cited by 202 · see citing works
[Quality of life in the patients with inflammatory bowel disease].
Sakurai, T. (2012) · PubMed · Cited by 184 · see citing works
Use of information resources by patients with cancer and their companions
Basch, E., Thaler, H. T., Shi, W., Yakren, S., & Schrag, D. (2004) · Cancer · doi:10.1002/cncr.20261 · Cited by 179 · see citing works
Eaden, J., Abrams, K. R., & Mayberry, J. F. (1999) · The American Journal of Gastroenterology · doi:10.1111/j.1572-0241.1999.01536.x · Cited by 163 · see citing works
Informing Patients: A Guide for Providing Patient Health Information
Tang, P. C., & Newcomb, C. (1998) · Journal of the American Medical Informatics Association · doi:10.1136/jamia.1998.0050563 · Cited by 160 · see citing works
Jørgensen, K. J., & Gøtzsche, P. C. (2004) · BMJ · doi:10.1136/bmj.328.7432.148 · Cited by 157 · see citing works
Website Quality Indicators for Consumers
Griffiths, K. M., & Christensen, H. M. (2005) · Journal of Medical Internet Research · doi:10.2196/jmir.7.5.e55 · Cited by 154 · see citing works
The Internet as a Source for Current Patient Information
McClung, H. J., Murray, R. D., & Heitlinger, L. A. (1998) · PEDIATRICS · doi:10.1542/peds.101.6.e2 · Cited by 153 · see citing works
Disease-related worries and concerns: a study on out-patients with inflammatory bowel disease.
Moser, G., Tillinger, W., Sachs, G., Genser, D., Maier-Dobersberger, T., Spiess, K., Wyatt, J., Vogelsang, H., Lochs, H. H., & Gangl, A. (1995) · PubMed · Cited by 153 · see citing works
How Google is changing medicine
Giustini, D. (2005) · BMJ · doi:10.1136/bmj.331.7531.1487 · Cited by 118 · see citing works
Use of the Web for Medical Information by a Gastroenterology Clinic Population
O’Connor, J. B. (2000) · JAMA · doi:10.1001/jama.284.15.1962 · Cited by 118 · see citing works
Searching for the Right Search — Reaching the Medical Literature
Steinbrook, R. (2006) · New England Journal of Medicine · doi:10.1056/nejmp058128 · Cited by 114 · see citing works
Prostate Cancer on the Internet—Information or Misinformation?
Black, P. C., & Penson, D. F. (2006) · The Journal of Urology · doi:10.1016/s0022-5347(05)00996-1 · Cited by 79 · see citing works
What do patients want to know about their inflammatory bowel disease?
Martín, A., Leone, L., Castagliuolo, I., et al. (1993) · PubMed · Cited by 67 · see citing works
The Health On the Net Code of Conduct for medical and health web sites.
Boyer, C., Selby, M. J., & Appel, R. D. (1998) · PubMed · Cited by 56 · see citing works
Two Wrongs Don’t Make a Right: Harm Aggravated by Inaccurate Information on the Internet
Crocco, A., Villasís-Keever, M. Á., & Jadad, A. R. (2002) · PEDIATRICS · doi:10.1542/peds.109.3.522 · Cited by 53 · see citing works
The information needs and fears of patients with inflammatory bowel disease.
Schölmerich, J., Sedlak, P., Hoppe-Seyler, P., et al. (1987) · PubMed · Cited by 49 · see citing works
What the Patient Wants to Know About Crohnʼs Disease
Rees, J. E. P., Mayberry, J. F., & Calcraft, B. (1983) · Journal of Clinical Gastroenterology · doi:10.1097/00004836-198306000-00005 · Cited by 37 · see citing works
Patients' Experiences of and Satisfaction with Care for Their Epilepsy
Buck, D., Jacoby, A., Baker, G. A., et al. (1996) · Epilepsia · doi:10.1111/j.1528-1157.1996.tb00036.x · Cited by 36 · see citing works
Awareness of Sources of Peer-Reviewed Research Evidence on the Internet
Sigouin, C. S. (2002) · JAMA · doi:10.1001/jama.287.21.2867 · Cited by 35 · see citing works
Inflammatory Bowel Disease: Patients' Expectations in the 1990s
Probert, C. S., & Mayberry, J. F. (1991) · Journal of the Royal Society of Medicine · doi:10.1177/014107689108400305 · Cited by 33 · see citing works
Biofeedback Improvement of Lower Esophageal Sphincter Pressures and Reflux Symptoms
Gordon, A., Gordon, E., Berelowitz, M., et al. (1983) · Journal of Clinical Gastroenterology · doi:10.1097/00004836-198306000-00008 · Cited by 15 · see citing works
Flagged first, then by citations
Cited by
Sorted by citations
Zhu, W., He, B., Wang, X., Du, Y., Young, K., & Jiang, S. (2025) · BMC Public Health · doi:10.1186/s12889-025-23475-9 · Cited by 74 · see citing works
Tu, J., Zhang, C., Zhang, H., Liang, L., & He, J. (2025) · DIGITAL HEALTH · doi:10.1177/20552076251366390 · Cited by 44 · see citing works
YouTube and TikTok as a source of medical information on dissociative identity disorder
Munoz, I. B., Liu-Zarzuela, J., Oorjitham, N., & Jacob, D. (2024) · Journal of Affective Disorders Reports · doi:10.1016/j.jadr.2023.100707 · Cited by 21 · see citing works
Whelan, A. M., Jurgens, T. M., Bowles, S. K., & Doyle, H. (2009) · Annals of Pharmacotherapy · doi:10.1345/aph.1l688 · Cited by 16 · see citing works
Polycystic Ovary Syndrome and Exercise: Evaluation of YouTube Videos
Atigan, A., & Atigan, A. (2023) · Cureus · doi:10.7759/cureus.35093 · Cited by 7 · see citing works
Zhang, Y.-J., Guo, Y.-Y., & Wang, Y. (2026) · Scientific Reports · doi:10.1038/s41598-026-52532-5 · Cited by 3 · see citing works
“…educational quality of patient-facing web-based health content and subsequently validated for use in short-form video health content analyses 20–24 , was employed to assess the holistic educational value of each video, including the completeness of presented clinical information, logical flow…”
Yu, W.-X., Li, Z.-B., Shao, X.-Y., Cai, W.-J., Wang, M., Yang, C.-H., & Lu, W. (2026) · DIGITAL HEALTH · doi:10.1177/20552076261434141
- Authors
- Bernard, A., Langille, M., Hughes, S., Rose, C., Leddin, D., & Veldhuyzen van Zanten, S.
- Affiliations
- Dalhousie University (CA)
- Venue
- The American Journal of Gastroenterology
- Published
- 2007-09
- Volume
- 102
- Issue
- 9
- Pages
- 2070-2077
- ISSN
- 0002-9270 (ISSN-L)
- 1572-0241
- OpenAlex
- W1963659399
- Cited by
- 1,197
- References
- 33
- Citations by year
- 2026: 359 · 2025: 211 · 2024: 169 · 2023: 144 · 2022: 113 · 2021: 81 · 2020: 31 · 2019: 20 · 2018: 12 · 2017: 6 · 2016: 6 · 2015: 13 · 2014: 6 · 2013: 2 · 2012: 3
- FWCI
- 1.27
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- The American Journal of Gastroenterology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Health Professions › General Health Professions › Health Literacy and Information Accessibility
- Social Sciences › Health › Social Media in Health Education
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Inflammatory Bowel Disease
- Keywords
- inflammatory bowel disease, Crohn's disease, ulcerative colitis, patient information resources, health information websites, website quality evaluation, Global Quality Score, reading level, patient education
- MeSH terms
- Humans, Inflammatory Bowel Diseases, Information Storage and Retrieval, Internet
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review