The prevalence of mild cognitive impairment (MCI) has significantly increased in recent years. No specific instruments are available in Spanish for assessing health-related quality of life (HRQoL) in people with MCI. The aim of this study was to adapt transculturally and validate the mild cognitive impairment questionnaire (MCQ) in Spanish people with MCI. A standardized transcultural adaptation process was carried out, and the structural equivalence of the Spanish version of the scale was examined. In addition, we studied the reliability and construct validity of the instrument. The sample comprised 100 people with MCI, with a mean age of 79.5 years. In a confirmatory factor analysis, we found the instrument had a one-factor structure and adequate internal consistency. Related to the construct validity, we found meaningful relationships with measures of HRQoL and depression. Our results indicate that the Spanish version of the MCQ is a reliable and valid tool for measuring HRQoL in Spanish patients with MCI. The availability of specific tools, such as the MCQ allows nurses to evaluate new intervention strategies to improve the HRQoL of these patients. Furthermore, this scale can be used by researchers and clinicians to improve the standards of care provided to this population.
Keywords: linguistic validation; mild cognitive impairment; psychometric properties; quality of life.
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