OBJECTIVE: Determine the psychometric properties of PRECiS (Patient Reported Evaluation of Cognitive State): A new patient-centred, patient reported outcome measure for perceived impact of cognitive problems, developed through qualitative work, systematic review and service user consultation.
DESIGN: An observational study exploring acceptability, internal consistency, construct validity, inter-rater reliability and test-retest reliability, with opportunistic qualitative data on sensitivity to change.
SETTING: Home visits in the community.
