physical health measures*

Research into informal caregivers' burden does not distinguish between different stages of impairment. This study explored the determinants of burden from an in-depth perspective in order to identify which determinants apply to which phases of impairment.; Methods: This was a cross-sectional study including frail older persons aged 65 and above. Instruments used were the interRAI Home Care, the Zarit-12 interview and an ad hoc economic questionnaire.