Open AccessValidity and reliability of the Katz-15 scale to measure unfavorable health outcomes in community-dwelling older people
Author(s) -
Wijnand Laan,
Nicolaas P.A. Zuithoff,
Irene Drubbel,
Nienke Bleijenberg,
Mattijs E. Numans,
Niek J. de Wit,
Marieke J. Schuurmans
Publication year - 2014
Publication title -
the journal of nutrition, health and aging/the journal of nutrition, health and aging
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.987
H-Index - 82
eISSN - 1760-4788
pISSN - 1279-7707
DOI - 10.1007/s12603-014-0558-5
Subject(s) - scale (ratio) , gerontology , activities of daily living , quality of life (healthcare) , reliability (semiconductor) , medicine , population , psychology , physical therapy , environmental health , nursing , power (physics) , physics , quantum mechanics
To predict the risk of future unfavourable health outcomes in older people it is common to assess the level of both basic and instrumental activities of daily living. To accomplish this, the commonly used Katz-6 and the Lawton IADL questionnaires can be combined to form the 'Modified Katz ADL' scale, also known as the Katz-15 scale. So far, the validity and reliability of the Katz-15 scale is unknown. The objective of the current study is to investigate how well the Katz-15 is able to predict future unfavorable health outcomes and how this is related to the existing Katz-6 scale.