Intrarater and interrater reliability of the Clinical Frailty Scale-Es and FRAIL-Es in critically ill patients.

Objective: To evaluate the intrarater and interrater reliability of the Clinical Frailty Scale-Spain (CFS-España) and FRAIL-España and the internal consistency of the FRAIL-España when implemented in critically ill patients by intensive care nurses and physicians.

Design: Descriptive, observational and metric study.

Setting: intensive care unit (ICU) of Spain.

Cross-cultural adaptation of the FRAIL scale for critically ill patients in Spain.

Aim: To translate and culturally adapt the FRAIL scale into Spanish and perform a preliminary test of diagnostic accuracy in patients admitted to intensive care units.

Design: Cross-sectional diagnostic study.

Methods: Five intensive care units (ICU) in Spain were participated.