Measurement Validity of the Low Vision Independence Measure (LVIM).
OBJECTIVE. This study's objective was to test the psychometrics of Smith's (2013) Low Vision Independence Measure (LVIM) using the Rasch model. METHOD. A cohort design was used with 93 participants receiving occupational therapy for low vision. Confirmatory factor analysis (CFA) with a parceling app...
| Publicado en: | American Journal of Occupational Therapy Vol. 73; no. 3; pp. 1 - 12 |
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| Autores principales: | , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
American Occupational Therapy Association
May/Jun2019
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=136608675&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 136608675 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 02729490 44I jtl: American Journal of Occupational Therapy issn: 02729490 maglogo: N pubinfo: dt: May/Jun2019 vid: 73 iid: 3 pid: 6680 pub: American Occupational Therapy Association place: North Bethesda, Maryland artinfo: ui: 136608675 136608675 136608675 10.5014/ajot.2019.031070 136608675 ppf: 1 ppct: 11 formats: fmt: @attributes: type: P tig: atl: Measurement Validity of the Low Vision Independence Measure (LVIM). aug: au: Smith, Theresa M. Krishnan, Shilpa Hong, Ickpyo Reistetter, Timothy A. affil: Theresa M. Smith, PhD, OTR, CLVT, is Associate Professor, School of Occupational Therapy, Texas Woman's University, Houston sug: subj: Vision, Subnormal Psychometrics Instrument Validation Human Scales Rasch Analysis Prospective Studies Factor Analysis Male Female Aged Aged, 80 and Over Macular Degeneration Descriptive Statistics Internal Consistency Data Analysis Software Reliability Aged: 65+ years Aged, 80 & over Male Female ab: OBJECTIVE. This study's objective was to test the psychometrics of Smith's (2013) Low Vision Independence Measure (LVIM) using the Rasch model. METHOD. A cohort design was used with 93 participants receiving occupational therapy for low vision. Confirmatory factor analysis (CFA) with a parceling approach was used to test the LVIM factors and Rasch analysis to examine item-level psychometrics. RESULTS. Participants' average age was 78.9 yr (standard deviation = 12.1), and the majority were female (72.8%) with macular degeneration (62.3%). The CFA revealed two measurement factors: visual field or scotoma (n = 28) and visual acuity (n = 24). We removed six misfitting items, and the two factors of the revised LVIM demonstrated good rating scale function, good internal consistency (person reliability: visual field, .87; visual acuity, .90), good precision (person strata: visual field, 3.91; visual acuity, 4.40), no ceiling or floor effects, and no differential item functioning. CONCLUSION. The revised LVIMdemonstrates good psychometrics on the Rasch model and can be used as a valid outcome measure in low vision rehabilitation. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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