Reliability and Validity of the Brazilian Version of the Late-Life Function and Disability Instrument.

Objective: We evaluated the test-retest reliability, internal consistency, and construct validity of the Brazilian version of the Late-Life Function and Disability Instrument.

Method: A sample of 118 older adults provided data for testing construct validity and internal consistency, and 14 provided data for testing test-retest reliability. Factor analysis with varimax rotation was used to assess construct validity.