title: [The 2-Scale Model of the National Eye Institute Visual Function Questionnaire (NEI-VFQ) to Assess Vision-Related Quality of Life].
abstract: AimThis study addresses the examination of the factorial validity of the National Eye Institute Visual Function Questionnaire 39 (NEI-VFQ 39) and the neuro-ophthalmological supplement in a German sample.MethodEighty-one patients with visual field defects affecting at least one eye answered the NEI-VFQ 39 and the supplement. Theoretical factor structures reported in the manuals were examined in confirmatory factor analysis. Because of a misfit, items retained after item analysis were subjected to exploratory factor analysis.ResultsThe originally postulated factor structures could not be replicated. Many items revealed floor effects. The 21 remaining items could be assigned to two factors - "visual functioning" and "socio-emotional impairment".ConclusionThe weakness of the theoretical factors can be avoided by using the 2-scale model.
authors.affiliation: Institut für Medizinische Psychologie, Otto-von-Guericke Universität Magdeburg.
authors.forename: D
authors.initials: D
authors.lastname: Brösel
authors.affiliation: Institut für Medizinische Psychologie, Otto-von-Guericke Universität Magdeburg.
authors.forename: B A
authors.initials: BA
authors.lastname: Sabel
authors.affiliation: Fachbereich AHW, Rehabilitationspsychologie, Hochschule Magdeburg-Stendal (FH), Stendal.
authors.forename: G H
authors.initials: GH
authors.lastname: Franke
authors.affiliation: Fachbereich AHW, Rehabilitationspsychologie, Hochschule Magdeburg-Stendal (FH), Stendal.
authors.forename: C
authors.initials: C
authors.lastname: Gall
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D003627:Data Interpretation, Statistical; D005260:Female; D005858:Germany; D006801:Humans; D008297:Male; D008875:Middle Aged; D054554:National Eye Institute (U.S.); D011594:Psychometrics / Q000379:methods*; D011788:Quality of Life / Q000523:psychology*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D011795:Surveys and Questionnaires; D014481:United States; D014786:Vision Disorders / Q000175:diagnosis* / Q000523:psychology*; D055815:Young Adult