Role of the health literacy assessment in healthcare: Content validation of "Health Literacy Behaviour" nursing outcome.

Purpose: To validate the content of the "Health Literacy Behaviour" nursing outcome (NO).

Methods: A content validation study was conducted during 2022. Each indicator was included in the NO, and its response levels were operationally defined. The initial version of each indicator and its response levels were refined and validated through the Delphi method. A panel of health literacy (HL) and nursing taxonomies experts evaluated the content through two content validity indicators. The content validity of the NO and each index was determined by calculating the content validity index (CVI). A qualitative analysis of the recommendations provided by the experts was carried out to improve the understanding of the indicators and their levels.

Findings: A total of 108 experts participated in this study. Mostly females with more than 10 years of professional experience. The results demonstrated a high CVI of the indicators and the NO "Health Literacy Behaviour." All indicators achieved excellent (CVI ≥ 0.80) relevance and clarity. The CVI universal average method (CVI-p) of the NO achieved an excellent result of 0.90.

Conclusions: The indicators included in the NO "Health Literacy Behaviour" have content validity.

Implications for nursing practice: These findings provide evidence-based indicators to measure the patient's actions to obtain, process, and understand information about health and disease, interact with the health system, and make informed health decisions. The validation of this NO would identify populations with low HL, allowing the health of this community to be promoted. Health literacy should be a priority objective of health management and policies.