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Validation of the Portuguese Version of the Scleroderma Health Assessment Questionnaire

Author

Listed:
  • Inês Genrinho

    (Rheumatology Department, Tondela Viseu Hospital Centre, 3504-509 Viseu, Portugal
    Rheumatology Department, Baixo Vouga Hospital Centre, 3810-164 Aveiro, Portugal)

  • Pedro L. Ferreira

    (Centre for Health Studies and Research, Faculty of Economics, University of Coimbra, 3004-512 Coimbra, Portugal)

  • Tânia Santiago

    (Rheumatology Department, Hospital and University Centre of Coimbra, 3004-512 Coimbra, Portugal)

  • Adriana Carones

    (Rheumatology Department, Hospital and University Centre of Coimbra, 3004-512 Coimbra, Portugal)

  • Carolina Mazeda

    (Rheumatology Department, Baixo Vouga Hospital Centre, 3810-164 Aveiro, Portugal
    EpiDoC Unit, CEDOC, NOVA Medical School, NOVA University of Lisbon, 1169-056 Lisbon, Portugal)

  • Anabela Barcelos

    (Rheumatology Department, Baixo Vouga Hospital Centre, 3810-164 Aveiro, Portugal
    EpiDoC Unit, CEDOC, NOVA Medical School, NOVA University of Lisbon, 1169-056 Lisbon, Portugal
    Comprehensive Health Research Center (CHRC), NOVA University of Lisbon, 1169-056 Lisbon, Portugal)

  • Tiago Beirão

    (Rheumatology Department, Vila Nova de Gaia Espinho Hospital Center, 4434-502 Vila Nova de Gaia, Portugal)

  • Flávio Costa

    (Rheumatology Department, Vila Nova de Gaia Espinho Hospital Center, 4434-502 Vila Nova de Gaia, Portugal)

  • Inês Santos

    (Rheumatology Department, Tondela Viseu Hospital Centre, 3504-509 Viseu, Portugal)

  • Maura Couto

    (Rheumatology Department, Tondela Viseu Hospital Centre, 3504-509 Viseu, Portugal)

  • Maria Rato

    (Rheumatology Department, Hospital Centre of São João, 4200-319 Porto, Portugal)

  • Georgina Terroso

    (Rheumatology Department, Hospital Centre of São João, 4200-319 Porto, Portugal)

  • Paulo Monteiro

    (Rheumatology Department, Tondela Viseu Hospital Centre, 3504-509 Viseu, Portugal)

Abstract

The Health Assessment Questionnaire Disability Index (HAQ-DI) was completed with five visual analog scales to assess systemic sclerosis (SSc) called Scleroderma HAQ (SHAQ). We performed a validation of the European Portuguese version of SHAQ for patients with SSc. Patients with different forms of SSc from five Hospital Centers were invited. The reliability of the Portuguese SHAQ was evaluated by internal consistency and by test–retest reliability. Content validity was checked by two rheumatologists and by a panel of patients. Construct validity was assessed by structural validity and by known-groups hypothesis tests. Criterion validity was addressed with selected dimensions from the UCLA GIT 2.0, the SF-36v2, and the EuroQoL EQ-5D-5L. A total of 102 SSc patients agreed to participate, 31 of which answered to the retest. HAQ-DI demonstrated high internal consistency reliability (α = 0.866) and SHAQ also showed high test–retest reliability (ICC 0.61–0.95). We evidenced the unidimensionality of all VASs. HAQ-DI scores were worse in males, patients older than 65 years, and individuals with a diffuse form of SSc. Criterion validity was mainly evidenced through the correlation between the HAQ-DI and SF-36v2 physical summary measure (r = −0.688) and EQ-5D-5L index score (r = −0.723). Likewise, the SHAQ overall disease severity VAS was also correlated with SF-36v2 physical summary measure (r = −0.628). Mental score correlations were smaller. With the exception of the Raynaud’s VAS, all the other VASs correlated well with similar clinical variables. This paper provides evidence to demonstrate how reliable and valid the European Portuguese version of SHAQ is, to be used in SSc patients to assess the clinical severity under the perspective of patients.

Suggested Citation

  • Inês Genrinho & Pedro L. Ferreira & Tânia Santiago & Adriana Carones & Carolina Mazeda & Anabela Barcelos & Tiago Beirão & Flávio Costa & Inês Santos & Maura Couto & Maria Rato & Georgina Terroso & Pa, 2023. "Validation of the Portuguese Version of the Scleroderma Health Assessment Questionnaire," IJERPH, MDPI, vol. 20(22), pages 1-12, November.
  • Handle: RePEc:gam:jijerp:v:20:y:2023:i:22:p:7062-:d:1279907
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    References listed on IDEAS

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    1. Pedro L. Ferreira & Luís N. Pereira & Patrícia Antunes & Lara N. Ferreira, 2023. "EQ-5D-5L Portuguese population norms," The European Journal of Health Economics, Springer;Deutsche Gesellschaft für Gesundheitsökonomie (DGGÖ), vol. 24(9), pages 1411-1420, December.
    2. Henry Kaiser, 1974. "An index of factorial simplicity," Psychometrika, Springer;The Psychometric Society, vol. 39(1), pages 31-36, March.
    3. Pedro L. Ferreira & Inês Genrinho & Tânia Santiago & Adriana Carones & Carolina Mazeda & Anabela Barcelos & Tiago Beirão & Flávio Costa & Inês Santos & Maura Couto & Maria Rato & Georgina Terroso & Pa, 2023. "Creation and Validation of a Portuguese Version of the UCLA Scleroderma Clinical Trial Consortium Gastrointestinal Tract Instrument," IJERPH, MDPI, vol. 20(2), pages 1-12, January.
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