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Reliability and validity of the Portuguese version of the Stroke Impact Scale 2.0 (SIS 2.0)

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Abstract

Objective

To test the reliability and validity of the Portuguese version of the Stroke Impact Scale 2.0 (SIS 2.0).

Methods

Two samples (N = 448 and N = 50) of stroke patients attending physical therapy were evaluated. The Portuguese versions of the SIS 2.0 and Chedoke-McMaster Stroke Assessment (CMSA), and a set of individual patient characteristics were the measures used.

Results

Reliability was good with Cronbach’s alpha coefficients ranging from 0.83 to 0.96, and intraclass correlation coefficients (ICC) between 0.70 and 0.95 for the SIS 2.0 domains. Construct validity was supported by 6 predefined hypotheses involving expected correlations between SIS 2.0 domains, CMSA dimensions and age. An additional predefined hypothesis was also confirmed, with subjects without complications during hospitalization obtaining significantly higher scores in 7 of the 8 SIS 2.0 domains (P < 0.05).

Conclusion

The Portuguese SIS 2.0 evidenced suitable psychometric characteristics in terms of reliability and validity.

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Acknowledgments

The authors would like to thank the physical therapy staff from the health care institutions. In addition, the patients who participated in this study also deserve our deep gratitude.

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Authors and Affiliations

  1. Centre for Health Studies and Research, University of Coimbra, Coimbra, Portugal

    Rui Soles Gonçalves, João Neves Gil, Luís Manuel Cavalheiro & Pedro Lopes Ferreira

  2. Polytechnic Institute of Coimbra, College of Health Technology of Coimbra, Rua 5 de Outubro, S. Martinho do Bispo, Apartado 7006, 3040-162, Coimbra, Portugal

    Rui Soles Gonçalves, João Neves Gil & Luís Manuel Cavalheiro

  3. University of Aveiro, College of Health, Aveiro, Portugal

    Rui Dias Costa

  4. Faculty of Economics, University of Coimbra, Coimbra, Portugal

    Pedro Lopes Ferreira

Authors
  1. Rui Soles Gonçalves
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  2. João Neves Gil
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  3. Luís Manuel Cavalheiro
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  4. Rui Dias Costa
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  5. Pedro Lopes Ferreira
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Correspondence to Rui Soles Gonçalves.

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Gonçalves, R.S., Gil, J.N., Cavalheiro, L.M. et al. Reliability and validity of the Portuguese version of the Stroke Impact Scale 2.0 (SIS 2.0). Qual Life Res 21, 691–696 (2012). https://doi.org/10.1007/s11136-011-9977-5

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  • DOI: https://doi.org/10.1007/s11136-011-9977-5

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