Title: Development and validation of the RASP list (Rationalization of Home Medication by an Adjusted STOPP list in Older Patients): A novel tool in the management of geriatric polypharmacy
Authors: Van der Linden, Lorenz ×
Decoutere, Liesbeth
Flamaing, Johan
Spriet, Isabel
Willems, Ludo
Milisen, Koen
Boonen, Steven
Tournoy, Jos #
Issue Date: 28-Jan-2014
Series Title: European Geriatric Medicine vol:In press
Article number: S1878764913009741
Abstract: Abstract

Inappropriate prescribing is prevalent in older people. One of the interventions is to optimize geriatric pharmacotherapy with a screening tool to detect potentially inappropriate prescribing. The aim of this study was to develop a novel instrument, the RASP list, which was adapted from The Screening Tool of Older Persons’ potentially inappropriate Prescriptions criteria.

Face validity, usability and time investment were determined. Content validity was verified with the Content Validity Index (CVI) and the modified kappa index (κ*). Cohen's kappa (κ) was used to determine the inter-rater reliability. Content and reproducibility validation were to be repeated if consensus (κ* ≥ 0.74) could not be reached in the first round or if new compelling evidence was published.

Ten experts validated the content of RASP 1.0. The scale-CVI/Average (S-CVI/Ave) was 0.936, Three items did not reach κ* ≥ 0.74. Median time to complete a patient case with RASP 1.0 was 316 seconds. Inter-rater reliability was determined by 9 pharmacists (κ = 0.71) and 10 geriatricians (κ = 0.63). In a second validation round, 15 items were added to and 3 items deleted from RASP 1.0. Nine experts validated the new content of RASP 2.0. All new items but one reached a κ* ≥ 0.74. The S-CVI/Ave was 0.923. Inter-rater reliability of RASP 2.0 was performed by 14 pharmacists (κ = 0.77). The final version of the RASP list contained 76 items.

The RASP list is a reliable (κ = 0.77) and valid (S-CVI/Ave = 0.92) screening tool to identify polypharmacy in older persons. Further research concerning clinical relevancy is warranted.
ISSN: 1878-7649
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Clinical Pharmacology and Pharmacotherapy
Academic Centre for Nursing and Midwifery
Gerontology and Geriatrics
× corresponding author
# (joint) last author

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