Advances in Clinical and Experimental Medicine

Title abbreviation: Adv Clin Exp Med
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ISSN 1899–5276 (print)
ISSN 2451-2680 (online)
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Advances in Clinical and Experimental Medicine

2012, vol. 21, nr 6, November-December, p. 781–790

Publication type: original article

Language: English

The Psychometric Properties of the Portuguese Version of the Stroke Quality of Life Scale

Własności psychometryczne portugalskiej wersji Skali Jakości Życia po Udarze Mózgu

Susana Silva1,2,A,B,C,D,E,F,G, Dulce Sousa3,B,C,E, Vivian Rezende4,B,C,E, Arcília Teixeira4,B,C,E, Bruno Peixoto2,5,A,B,C,D,E,F,G

1 Psychology Department, The Advanced Institute of Health Sciences – North (Advanced Polytechnic and University Cooperative [CESPU]), Gandra, Portugal

2 Psychology and Health Research Unit (UnIPSa), Research Center on Health Sciences (CICS), Gandra, Portugal

3 Hospital de São João, Porto, Portugal

4 Hospital da Santa Casa da Misericórdia do Marco de Canavezes, Marco de Canavezes, Portugal

5 Sciences Department, The Advanced Institute of Health Sciences – North (CESPU), Gandra, Portugal

Abstract

Background. Quality of life (QoL) is currently of particular importance to health services and is regarded a key dimension for the assessment of stroke outcomes. However there are few instruments available for the Portuguese population.
Objectives. The aim of the present work is to determine the psychometric properties of the Portuguese version of the Stroke Quality of Life Scale (ECVI-38), including acceptability, construct and criterion validity.
Material and Methods. The sample comprised 51 patients with a clinical history of stroke (2 to 24 months prior) from the outpatient clinic of two Portuguese hospitals.. Patients with neuropsychiatric pathologies or other health conditions that might affect QoL were excluded. Parallel to the application of the ECVI-38, several other tests were used in order to determine the discriminative and concurrent validity of the scale.
Results. The ECVI-38 showed good acceptability, with missing data below 10%, and ceiling and floor effects below 80%. Cronbach’s alpha for the total scale was 0.94 and ranged between 0.7 and 0.9 in each domain. ECVI-38 results were able to differentiate patients according to the severity of neurological impairment. Every domain of the scale correlated significantly with instruments of similar content.
Conclusion. The Portuguese version of the ECVI-38 showed good psychometric characteristics.

Streszczenie

Wprowadzenie. Jakość życia (QoL) jest obecnie szczególnie ważna w świadczeniu usług zdrowotnych i jest uważana za kluczowy element oceny wyniku leczenia udaru. Jednak istnieje kilka instrumentów dostępnych dla populacji portugalskiej.
Cel pracy. Określenie właściwości psychometrycznych wersji portugalskiej Skali Jakości Życia po Udarze Mózgu (ECVI-38), w tym dopuszczalności, konstrukcji i trafności kryterialnej.
Materiał i metody. Do badań włączono 51 pacjentów z udarem w wywiadzie (2–24 miesięcy wcześniej) z dwóch portugalskich szpitali. Pacjenci z zaburzeniami neuropsychiatrycznymi lub innymi chorobami, które mogą mieć wpływ na QoL, zostali wykluczeni z badań. Oprócz ECVI-38 zastosowano też inne testy w celu określenia dyskryminacyjnej i diagnostycznej trafności skali.
Wyniki. ECVI-38 wykazała dobrą akceptowalność, brakujących danych było < 10%, a efekt sufit/podłoga < 80%. α-Cronbacha dla całej skali była 0,94 i wynosiła 0,7–0,9 w każdej domenie. Wyniki ECVI-38 pozwalały pogrupować pacjentów według ciężkości zaburzeń neurologicznych. Każda domena skali korelowała istotnie statystycznie z instrumentami o podobnej treści.
Wnioski. Portugalska wersja ECVI-38 wykazuje dobre właściwości psychometryczne.

Key words

quality of life, stroke, psychosocial assessment, validation

Słowa kluczowe

jakość życia, udar mózgu, ocena psychospołeczna, trafność

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