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DOI: 10.1055/s-0028-1109373
© Georg Thieme Verlag KG Stuttgart · New York
Modulare semiquantitative Qualitätsbewertung augenheilkundlicher Gesundheitsinformationen im Internet – Reproduzierbarkeit und Korrelation zwischen verschiedenen Bewertungskategorien
Modular Semiquantitative Quality Assessment of Ophthalmic Health Information on the Internet – Reproducibility and Correlation between Different Assessment CategoriesPublikationsverlauf
Eingegangen: 13.1.2009
Angenommen: 27.2.2009
Publikationsdatum:
22. Juni 2009 (online)

Zusammenfassung
Hintergrund: Zur Qualitätsbewertung webbasierter Gesundheitsinformationen in der Augenheilkunde bedarf es valider Standards und reproduzierbarer Prüfverfahren. Das Ziel der Untersuchung war, die Interrater-Reliabilität der Qualitätsbewertung augenheilkundlicher Websites und mögliche Abhängigkeiten der drei Bewertungskategorien Seriosität/Vertrauenswürdigkeit, Qualität medizinischer Inhalte und Nutzerfreundlichkeit untereinander zu untersuchen. Material und Methode: Nach Auswahl über die Suchmaschine „Google” wurde die Qualität von 20 augenheilkundlichen Websites mithilfe von Kriterien-Checklisten (modifizierte Afgis-Transparenzkriterien, modifizierter BITV-Test, Qualität medizinischer Inhalte zur AMD) in den vorgenannten 3 Kategorien von zwei unabhängigen Evaluatoren analysiert. Ergebnisse: Die Interrater-Reliabilität war mit Kappa-Werten von 0,91 für Seriosität/Vertrauenswürdigkeit, sowie 0,89 für Nutzerfreundlichkeit und 0,79 für Qualität medizinischer Inhalte sehr gut. Im Mittel wurden in den Kategorien Seriosität/Vertrauenswürdigkeit 62,5 % (± 17,43 %), Inhalt 27,36 % (± 16,5 %) und Nutzerfreundlichkeit 59,54 % (± 15,73 %) der Qualitätsanforderungen erfüllt. Zwischen den in den einzelnen Qualitätskategorien erzielten Ergebnissen besteht keine signifikante Korrelation (Seriosität – Inhalt: r = –0,039; p = 0,8709; Seriosität – Nutzerfreundlichkeit: r = –0,284; p = 0,228; Inhalt – Nutzerfreundlichkeit: r = 0,199; p = 0,4047). Schlussfolgerung: Werden im Rahmen der Qualitätsprüfung augenheilkundlicher Websites hinreichend operationalisierte Prüfkriterien angewandt, sind von verschiedenen Evaluatoren reproduzierbare Resultate erzielbar. Die Bewertung in einer einzelnen Kategorie, wie z. B. Seriosität/Vertrauenswürdigkeit, lässt keinen Rückschluss auf die Qualität anderer Kategorien wie Inhalt oder Nutzerfreundlichkeit oder die Gesamtqualität einer Internetpräsenz zu. Die Validität vereinfachter Instrumente zur Qualitätsprüfung von Gesundheitsinformationen durch Laien und Patienten kann daher begrenzt sein.
Abstract
Background: Quality evaluation of web-based health information in ophthalmology requires valid standards and reproducible assessment procedures. The objective was to evaluate the interrater-reliability of quality assessment of ophthalmic websites and a possible correlation between the results of the evaluation categories reliability/trustworthiness, quality of medical content and accessibility/usability. Materials and Method: After selection with the search engine ”Google” 20 ophthalmic websites had been analysed by two independent evaluators using criteria checklists (modified Afgis transparency criteria, modified BITV test, medical content related to AMD) related to the aforementioned 3 categories. Results: The interrater-reliability was almost perfectly estimated with Kappa-values of 0.91 for reliability/trustworthiness plus 0.89 for accessibility/usability and 0.79 for content. On average 62.5 % (± 17.43 %), 27.36 % (± 16.5 %) and 59.54 % (± 15.73 %) of the quality requirements were fulfilled for reliability/trustworthiness, content and accessibility/usability, respectively. No significant correlation was found between reliability and content (r = –0.039, p = 0.8709), reliability and accessibility/usability (r = –0.284; p = 0.228) plus content and accessibility/usability (r = 0.199; p = 0.4047). Conclusion: Sufficiently operationalised criteria are prerequisites for reproducible results of quality assessment of ophthalmic websites between different observers. The assessment within a single category, such as reliability/trustworthiness, does not allow one to draw conclusions on other categories such as content or accessibility/usability or the overall quality of a website. Therefore, simplified tools for quality assessment of health information by laymen and patients may have a limited validity.
Schlüsselwörter
Internet - Content - Qualität - Augenheilkunde - Gesundheitsinformationen
Key words
internet - content - quality - ophthalmology - health information
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PD Dr. Rainer Schalnus
Klinik für Augenheilkunde, Klinikum der Goethe-Universität
Theodor-Stern-Kai 7
60590 Frankfurt
Telefon: + + 49/2 28/9 28 96 90
Fax: + + 49/2 28/9 28 96 91
eMail: r.schalnus@schalnus.com