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Structural validity and reliability of the Dutch Older Patient in Acute Care Survey (OPACS), measuring nurses’ attitude towards older patients

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Structural validity and reliability of the Dutch Older Patient in Acute Care Survey (OPACS), measuring nurses’ attitude towards older patients

Open access

Rechten:

Samenvatting

Background: In clinical practice, nurses’ attitudes regarding older patients are important in relation to quality of
care. The Older People in Acute Care Survey (OPACS) is an instrument measuring hospital nurses attitudes
regarding older patients and is validated in Australia and the USA. The OPACS is translated in Dutch language and
content validity of this translation is previously assessed, presenting questionable results. Measurement instruments,
however, cannot be “validated” based on content validity evidence alone. Judgmental evidence and statistical
analysis should be combined to fully evaluate content domain definition and representation and guide further
development.
Objective: Assess structural validity and reliability to fully evaluate the OPACS for use in the Netherlands,
complementing previous conducted content validity results.
Design: Cross-sectional.
Setting: Three general hospitals in the Netherlands.
Participants: 201 registered nurses.
Methods: Confirmatory factor analysis was used to assess the structural validity. Reliability was assessed with
Cronbach’s alpha.
Results: OPACS Section A (measuring practice experiences) demonstrated to have acceptable structural
validity- and good reliability outcomes after exclusion of two items (model fit: x² [df=537]=8475.40, p <0.001,
CFI=0.96, TLI=0.96, RMSEA=0.21; Cronbach’s alpha=0.82). Section B (measuring general opinion) demonstrated
to have inadequate structural validity outcomes (model fit: x² [df=1127]=9200.29, p<0.001, CFI=0.68, TLI=0.67,
RMSEA=0.15). None of the items contributed significant to the factor and therefore no further analysis could be
performed (range p(>|z|)= 0.551 -0 .788).
Conclusion: Even though structural validity for section A was acceptable, content validity scores of a majority of
items in this subscale were low, resulting in questionable use of this subscale for the Dutch context. The findings of
this study, in relation to the earlier findings regarding content validity, justify the conclusion that use of the Dutch
OPACS in clinical practice and research is not recommended. Given these findings, future research should pursue
the development or (cross-cultural) validation of other instruments measuring hospital nurses attitudes towards older
patients for the Dutch cultural context. Furthermore, this study demonstrated the influence of cultural differences on
measurement instruments and the need for rigorous research before using a measurement instrument in a new
culture or context.

Toon meer
OrganisatieHogeschool Utrecht
AfdelingKenniscentrum Gezond en Duurzaam Leven
LectoraatChronisch Zieken
Gepubliceerd inJournal of Gerontology & Geriatric Research Vol. 6, Uitgave: 1, Pagina: 393
Jaar2017
TypeArtikel
TaalEngels

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