[Questionnaire to evaluate the importance of the family in nursing care. Validation of the Spanish version (FINC-NA)].

Background: The nursing profession is focused on patient care, without forgetting that patients are part of a social group, the family. The aim of this study was the adaptation of the "Families' Importance in Nursing Care-Nurses' Attitudes" (FINC-NA) scale to the Spanish language and its validation.

Methods: A descriptive cross-sectional study was carried out, using the bidirectional translation method for linguistic-cultural adaptation. It was applied to the nursing staff in the Paediatric Department of a University Hospital in Madrid. To evaluate the psychometric properties of the Spanish version, reliability, internal consistence and construct validity were calculated.

Results: The sample consisted of 274 professionals. Cronbach´s Alpha coefficient for the total scale was 0.864, oscillating between 0.888 and 0.769 in the subscales. The principal components factor analysis identified 4 factors, which explained 54.22% of total variance.

Conclusions: The new instrument makes it possible to determine the importance nurses give to participation by family members and their attitude to involving the latter in patient care, and the possibility of involving them in planning. It has been adapted to the Spanish population with good psychometrics results and enough evidence for its use in this context.