Tool Summary:

Measures of function are valuable indicators of the changes experienced by aging and chronically ill patients. The Index of Independence in Activities of Daily Living (Katz Index of ADL) was developed to evaluate changes in these populations, assessing a patient's overall performance of six self-care functions: bathing, dressing, toileting, transferring, continence, and feeding. It can be used to assess the need for care as well as the progression of illness and the effectiveness of treatment and rehabilitation. The Katz Index of ADL has been used in many settings, including clinical practice, nursing homes, and rehabilitation settings.


Sidney Katz, MD et al.

  1. Katz S, Downs TD, Cash HR, Grotz RC. Progress in development of the index of ADL. Gerontologist. 1970;10(1):20-30.
  2. Katz S, Ford AB, Moskowitz RW, Jackson BA, Jaffe MW. Studies of illness in the aged. The Index of ADL: a standardized measure of biological and psychosocial function. JAMA. 1963;185(12):914-9.