Control Attitudes Scale-Revised-Brazilian Version.

Area of Science:

• Cardiology
• Psychology
• Health Sciences

Background:

• Heart failure management requires effective self-care, which is influenced by perceived control (PC).
• Existing validated instruments for measuring PC in cardiac conditions, like the Control Attitudes Scale-Revised (CAS-R), are lacking in Brazil.
• Developing reliable measures for PC is essential for designing interventions to enhance self-care and patient outcomes.

Purpose of the Study:

• To translate and culturally adapt the Control Attitudes Scale-Revised (CAS-R) for the Brazilian population.
• To evaluate the content validity of the adapted CAS-R among Brazilian heart failure patients and healthcare professionals.

Main Methods:

• The CAS-R underwent translation and back-translation to ensure linguistic equivalence.
• An expert committee reviewed the translated scale for accuracy.
• Content validity was assessed by a panel of healthcare professionals and a group of heart failure patients, with a target content validity coefficient of > 0.70.

Main Results:

• Linguistic equivalence was established, with most items achieving high agreement after minor modifications.
• The adapted Brazilian version of the CAS-R demonstrated a strong content validity coefficient of 0.93.
• The instrument was found to be understandable for the majority of heart failure patients.

Conclusions:

• The Brazilian version of the CAS-R is linguistically equivalent to the original scale and possesses adequate content validity.
• This adapted instrument provides a reliable tool for assessing perceived control in Brazilian individuals with heart failure.
• Further psychometric validation is planned to support its use in clinical practice and research.