BMC Musculoskeletal Disorders (Mar 2022)

Spanish translation, cultural adaptation and validation of the SarQoL®: a specific health-related quality of life questionnaire for sarcopenia

  • Beatriz Montero-Errasquín,
  • Nieves Vaquero-Pinto,
  • Vicente Sánchez-Cadenas,
  • Anton Geerinck,
  • Elisabet Sánchez-García,
  • Jesús Mateos-Nozal,
  • José Manuel Ribera-Casado,
  • Alfonso J. Cruz-Jentoft

DOI
https://doi.org/10.1186/s12891-022-05125-y
Journal volume & issue
Vol. 23, no. 1
pp. 1 – 9

Abstract

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Abstract Background In 2015, a specific health-related quality of life questionnaire for sarcopenia, SarQoL®, was developed and validated in French. Since then, SarQoL® has been adapted and validated in different languages. We prepared a translation, cultural adaptation and validation of the psychometric properties of the SarQoL® into Spanish. Methods A cross-sectional study with 86 participants. The translation and adaptation followed international guidelines with two direct translations, a synthesized version of the direct translations, two reverse translations, consensus by an expert committee of a pre-final version, pre-test by end users and final version. The discriminative power (logistic regression analyses), construct validity (Pearson and Spearman´s correlation), internal consistency (Cronbach´s alpha coefficient), test–retest reliability (intraclass correlation coefficient) and ceiling and floor effects were analyzed. Results The Spanish version showed good construct validity (high correlation with comparable domains of the SF-36), high internal consistency (Cronbach's alpha coefficient: 0.84) and excellent test–retest reliability (ICC: 0.967, 95%, CI 0.917 – 0.989). However, it had no discriminative power between sarcopenic and non-sarcopenic participants defined with the EWGSOP and FNIH diagnostic criteria of sarcopenia. It did show discriminative power between patients with decreased vs normal muscle strength (54.9 vs. 62.6, p 0.009) and low vs. normal physical performance (57.3 vs. 70.2; p 0.005). No ceiling or floor effect was found. Conclusions The Spanish version of SarQoL® has similar psychometric properties to those of the original version of the instrument. It did not discriminate between sarcopenic and non-sarcopenic patients diagnosed according to the EWGSOP or FNIH criteria, but it did with those with low muscle strength and low physical performance.

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