Interactive, computer-based, self-reported, visual function questionnaire: the PalmPilot-VFQ

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dc.contributor.authorÜnver, Y.B.
dc.contributor.authorYavuz, Gülderen Aktan
dc.contributor.authorSinclair, Stephen H.
dc.date.accessioned2020-04-30T23:18:32Z
dc.date.available2020-04-30T23:18:32Z
dc.date.issued2009
dc.departmentDÜ, Tıp Fakültesi, Cerrahi Tıp Bilimleri Bölümüen_US
dc.descriptionWOS: 000268005800013en_US
dc.descriptionPubMed: 19478821en_US
dc.description.abstractPurpose To evaluate the testing performance, reliability, and validity of a self-administered visual function questionnaire designed for a Palm Pilot in comparison with the interviewer-administered-National Eye Institute Visual Function Questionnaire-25 (NEI-VFQ-25) (interviewer-NEI-VFQ-25) and self-administered-NEI-VFQ-25 (self-NEI-VFQ-25). Method The interviewer-NEI-VFQ-25 was administered to 135 sequential patients who visited a retina clinic, followed on separate days by the Palm Pilot-Visual Function Questionnaire (PalmPilot-VFQ) and self-NEI-VFQ-25. Rasch analysis of ordinal difficulty ratings for the PalmPilot-VFQ was used to estimate interval measures of perceived visual ability. Reliability was determined by calculating Cronbach's alpha and test-retest intraclass correlation coefficients (ICCs). Concurrent validity was determined by calculating correlations of the PalmPilot-VFQ score with that of a general vision question. For evaluating convergent validity, the PalmPilot-VFQ was compared with the interviewer-NEI-VFQ-25, habitual-correction visual acuity (HCVA), and with two visual analogue scale (VAS) questions. Performance time and testability were compared among the three questionnaires. Results Rasch analysis eliminated two items in the PalmPilot-VFQ due to poor-fit statistics. The final items showed internal consistency (Cronbach's alpha=0.89) and test-retest reliability (ICC=0.79), as well as an excellent separation index (3.23 and 4.01) for item parameters with significant concurrent correlation (P<0.0001). On evaluating convergent validity, the PalmPilot-VFQ showed strong correlations with interviewer-NEI-VFQ-25, with the HCVA of the better-seeing eye, and with the VAS questions (P=0.0001). Ninety percent of the 135 patients (HCVA >20/200 in the better-seeing eye) could perform the PalmPilot-VFQ with their habitual correction or high-plus spectacles, but in significantly less time than either interviewer-NEI-VFQ-25 or self-NEI-VFQ-25 (P<0.0001). Conclusion The PalmPilot-VFQ seems to be a reliable, valid, interactive, computer-based, self-administered questionnaire that can be used routinely by physicians to evaluate functional vision disability in populations with a high prevalence of macular disease. Eye (2009) 23, 1572-1581; doi:10.1038/eye.2009.101; published online 29 May 2009en_US
dc.description.sponsorshipTUBITAKTurkiye Bilimsel ve Teknolojik Arastirma Kurumu (TUBITAK)en_US
dc.description.sponsorshipThis article was supported by TUBITAK, and was accepted by the ASRS committee in 2008 as a poster presentationen_US
dc.identifier.doi10.1038/eye.2009.101en_US
dc.identifier.endpage1581en_US
dc.identifier.issn0950-222X
dc.identifier.issn1476-5454
dc.identifier.issue7en_US
dc.identifier.scopusqualityQ1en_US
dc.identifier.startpage1572en_US
dc.identifier.urihttps://doi.org/10.1038/eye.2009.101
dc.identifier.urihttps://hdl.handle.net/20.500.12684/3388
dc.identifier.volume23en_US
dc.identifier.wosWOS:000268005800013en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakPubMeden_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherNature Publishing Groupen_US
dc.relation.ispartofEyeen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectRasch analysisen_US
dc.subjectvisual function questionnaireen_US
dc.subjectvisual functionen_US
dc.subjectvisual acuityen_US
dc.titleInteractive, computer-based, self-reported, visual function questionnaire: the PalmPilot-VFQen_US
dc.typeArticleen_US

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