Body functions - The physiological functions of body systems (including psychological functions).
Body structures - Anatomical parts of the body such as organs, limbs and their components.
Impairments - Problems in body function and structure such as significant deviation or loss.
Activity - The execution of a task or action by an individual.
Activity limitations - Difficulties an individual may have in executing activities.
Participation restrictions - Problems an individual may experience in involvement in life situations.
Environmental factors - The physical, social and attitudinal environment in which people live and conduct their lives. These are either barriers to or facilitators of the person's functioning.
*Personal factors - Influence how disability is experienced by the individual and some, such as age and gender, are commonly included in data collections.