Development of a subset of the international classification of functioning, disability and health as a basis for a questionnaire for community-dwelling older adults aged 75 and above in primary care: a consensus study.

By using consensus techniques and the NGT, the process led to 51 second-level ICF categories to describe the functioning of community-dwelling older adults. The decisions made in the consensus conference emphasised the importance of considering the individual life situation from a more holistic perspective and addressing functioning as a focus of care. Next, the 51 categories will contribute to the development of an ICF-based questionnaire.