Www.hon.ch Non Governmental Organization Quality of health related information on the Web Health On the Net Foundation: assessing the quality of health.

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Presentation transcript:

Non Governmental Organization Quality of health related information on the Web Health On the Net Foundation: assessing the quality of health Web page all over the world Celia Boyer Executive Director Health On the Net Foundation

Outline Health website accreditation The HONcode database Search engine technologies of HON Further developments

Control the quality of health websites? Cartoon by Peter Steiner has been reproduced from page 61 of July 5, 1993 issue of The New Yorker, (Vol.69 (LXIX) ) The New Yorker, ,2 billion Internet users in the world in 2007 Internet usage has grown by 225% since 2000

The mission of Heath On the Net Foundation To guide Internet users by highlighting reliable, comprehensible, relevant and trustworthy sources of online health and medical information Since 1995, HON has been tackling the major obstacles of Internet usage: the overwhelming quantity of information and the uneven quality of health information available online

… specific for health websites… applicable for all sites Various initiatives for controlling the quality

HONcode principles 1.Authoritative Indicate the qualifications of the authors 2.Complementarity Information should support, not replace, the doctor-patient relationship 3.Privacy Respect the privacy and confidentiality of personal data submitted to the site by the visitor 4.Attribution Cite the source(s) of published Information and dating of medical and health pages 5.Justifiability Site must back up claims relating to benefits and performance 6.Transparency Accessible presentation, identities of editor and Webmaster, accurate contact 7.Financial disclosure Identify funding sources 8.Sponsorship Clearly distinguish advertising from editorial content

The Web publisher submits a request to be accredited and to obtain the right to display the HONcode seal The Web publisher fills in an online questionnaire The HONcode review team conducts a thorough evaluation of the website According to findings, website is: accredited accredited under condition to modify/add some statement on the website not accredited If accredited, a unique HONcode seal is granted Each website is re-evaluated each year The accredited website is integrated into the database of HONcode accredited websites, HONcodeHunt HONcode accreditation protocol

The HONcode database: HONcodeHunt + 5,700 sites 72 countries 32 languages English: 52% French: 11% 1,400,000 web pages accredited in Google.com Web pages characterised by: compliance with the HONcode principles corresponding excerpts indexed with MeSH terms and HON labels content labels (women’s health, information for patients,...) Examples: ClinicalTrials.gov HealthInsite.gov.au 10000steps.org.au betterhealth.vic.gov.au The National Urban League MEDLINEplus.gov PubMed Stop-tabac.ch Hospital 12 de Octubre Sociedad Argentina de Pediatría Diabetes Netzwerk Deutschland e-sante.fr chu-rouen.fr eurordis.org

International recognition In May 2004, HON won the «eEurope Award for eHealth» presented by the European Union and the EU Commission In 2002, HON Foundation was recognized as a non-governmental organization and granted special consultative status with the United Nations Economic and Social Council

Government-level collaboration Collaboration: HAS (Haute Autorité de Santé) and HON Outcome: HONcode will be the official international standard for quality of health websites in France.

Recognizing diversity in a globalizing world “Just because someone is easier to reach does not mean they are easier to understand. The opposite, in fact, is true. » Dominique Wolton Regional offices for the HON foundation: Bamako, Mali: french-speaking Africa Johannesburg, South Africa: english-speaking Africa Valencia, Spain

Search engine technologies of HON

MARVIN the crawler Web crawler (Baujard et al, 1998) Multi-Agent Retrieval Vagabond on Information Networks Use of MeSH* thesaurus and other medical dictionaries Detection of medical and health related Web pages Semi-automatic selection of most relevant health and medical Web pages Several languages processed English, French, Spanish, Italian, German, Portuguese, Danish, Dutch *MeSH: Medical Subject Headings

HON multilingual medical term extractor Use of MeSH terminology: indexing and information retrieval multilingual hierarchically structured Extraction of medical terms synonyms lexical normalisation Weighting of medical terms co-occurrences with other concepts weight of relations between concepts Evaluated as the best performing medical term categoriser amongst French systems (Névéol et al, 2005) Search system continually improved based on analysis of HONcode reviews and audits

Targeted search engine

Specialized search engine

Global search engine: working with Google labels

Identification of HONcode accredited sites Through the HON toolbar available to everyone, one can easily find and search all sites accredited by HON. Accredited Not accredited Accredited web sites Search engine

HON’s multilingual automatic quality-criteria detector Facilitates access to automatically-detected trustworthy information Assists HON’s manual review This research has been presented in August at MEDINFO 2007 Machine learning approach for automatic quality criteria detection of health Web pages Arnaud Gaudinat, Natalia Grabar & Celia Boyer

KWIC Prototype: HON’s multilingual automatic quality-criteria detector integrated into the Trusted search engine of the EU PIPS project

Lessons learnt Lesson 1. Need for parallel automated services Site-by-site review, indexing, annotation and surveillance of the medical Internet by humans is probably an unrealistic goal Lesson 2. Voluntary submission for accreditationEducate citizens to efficiently use the medical information the websites’ voluntary requests for accreditations are always backed by strong motivation to improve. Lesson 3. Recognizing diversity in a globalizing world – Multilingualism of the services provided Lesson 4. Education Continuous consumer education is needed to raise awareness amongst Internet users of the various issues in accessing health information.

Conclusion Active for over 10 years Educate citizens to efficiently use the medical information Automatic tools developed in order to support human expertise and tackle the large number of existing Web pages 2001 eEurope Quality Criteria for Health Web sites is based on the HONcode principles Collaboration with Google-Coop for Health Collaboration with the French HAS to be the official accrediting body for all French health Web sites Adherence to the HONcode enhances a website’s overall quality “More than just a mouse click: Research into work practices behind the assignment of medical trust marks on the World Wide Web” Adams SA, de Bont AA. IJMI 2006

Future developments HONcode to be a participating body in the implementation of the WHO eHealth resolution action plan Collaboration with governing bodies worldwide to provide quality control to all national health websites EU Recommendation of Quality Criteria for Health Related Web sites carried out by HON Continued advancement in this area

Challenges Initiative acceptance Funding International scope of the HONcode accreditation program Adaptation to the continuing evolving needs Relying on civic attitudes