Title
Basel Assessment of Adherence to Immunosuppressive Medications Scale^©

Project Management
Sabina De Geest

INS-Team
Sabina De Geest
Kris Denhaerynck 

External Partner
Charles University, CZ (Barbora Vankova)
Universität Wien, AT (Frederik Haupenthal/Gregor Bond)
BAASIS^© consortium (researchers who agreed to use the BAASIS^© and share back their data)

Location of Data Selection
Basel, Switzerland
Prag, Czech Republic

Duration
Fortlaufend

Description
The Basel Assessment of Adherence to Immunosuppressive Medication Scale (BAASIS^©) was developed to assess adherence to immunosuppressive drugs in transplant recipients. It is increasingly used in transplant and other patient populations.

Developed according to the ABC taxonomy of medication adherence (Vrijens et al., 2012), the BAASIS^© is recommended in the COMMIT guidelines for assessing medication adherence as a 5th vital sign in transplantation (Neuberger et al., 2017).

As part of our on-going efforts to evaluate its psychometric properties (i.e., validity/reliability), this project is reaching out to researchers who have used the BAASIS^© and whose work is relevant to our validation study.
To date, we have published one paper describing the Psychometric Properties of the BAASIS^©: “A Meta-analysis of Individual Participant Data recently published in Transplantation” (Denhaerynck et al., 2023). A next paper is in preparation on the predictive validity of the BAASIS^© in collaboration with researchers at the University Hospitals in Vienna (Haupenthal et al, submitted).

The BAASIS^© is used in 79 clinical and 153 research projects worldwide (status 01.11.2024).