Spanish adaptation of the Patient Health Engagement scale (S.PHE-s)in patients with chronic diseases.

Background: The Patient Health Engagement scale is an instrument based on evidence about the experiences and preferences of patients with chronic diseases regarding their engagement with the treatment they receive.

Aims: The main goal of this study was to adapt the Patient Health Engagement scale to the Spanish population (S.PHE-s) following the guidelines for cross-cultural adaptations.

Methods: The sample comprised 413 patients with different chronic diseases.

Results: The confirmatory factor analysis showed a one factor model corresponding to the structure proposed by the original authors. The factor structure was invariant by gender. Furthermore, a Rasch Model showed that the S.PHE-s was unidimensional. In addition, every polychoric correlation coefficient was higher than .60. The Ordinal Alpha of the S.PHE-s was .85. Finally, the S.PHE-s was found to be positively related to life satisfaction, positive affect, and treatment adherence and negatively correlated to negative affect, depression, and anxiety.

Conclusions: In light of these results, it may be concluded that the S.PHE-s has good psychometric properties and it may be used by the Spanish-speaking scientific community to measure patient engagement.