Escala de Adherencia Terapéutica para tratamiento de Cáncer de Mama (EAT-CaMa): Una evaluación multidimensional

Translated title of the contribution: Therapeutic Adherence Scale for the treatment of Breast Cancer (EAT-CaMa): A multidimensional assessment

Oscar Galindo Vázquez, Luis Alberto Mendoza-Contreras, Frank J. Penedo, Joel Flores Juárez, Rogelio Bobadilla Alcaraz, Enrique Bargalló Rocha

Research output: Contribution to journalArticlepeer-review


Introduction: The therapeutic adherence is a key aspect in the success of the oncology treatment, however its measurement is a challenge within the health system. Likewise, there are no valid or constructed scales to assess adherence in patients with breast cancer. Objective: To determine the psychometric properties of the Breast Cancer Therapeutic Adherence Scale (EAT-CaMa). Method: A non-experimental, instrumental design with a non-probabilistic sampling was used, for convenience. One hundred eighty nine participants with a diagnosis of breast cancer, between 21 and 84 years old, were included. Statistical analysis: An exploratory factor analysis was performed. Results: An exploratory factor analysis and internal consistency were carried out. Results: The EAT-CaMa of 27 questions obtained a global internal consistency α = 0.81 and an explained variance of 64%. Self-efficacy and physician-patient communication factors were identified, as well as several indicators. Conclusion: The EAT-CaMa is a short, valid and reliable instrument for the multidimensional evaluation of adherence to treatment in the Mexican breast cancer population. The identified factorial structure corroborates components reported in the literature and clinically relevant. It is recommended for use in clinical care (initiation and follow-up of treatment) and in future research.

Translated title of the contributionTherapeutic Adherence Scale for the treatment of Breast Cancer (EAT-CaMa): A multidimensional assessment
Original languageSpanish
Pages (from-to)123-137
Number of pages15
Issue number1
StatePublished - Mar 28 2022
Externally publishedYes


  • breast cancer
  • Mexico
  • psychometric properties
  • scale
  • Treatment adherence

ASJC Scopus subject areas

  • Oncology
  • Clinical Psychology


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