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Qualitative development of the PROMIS Profile v1.0-Familial Chylomicronemia Syndrome (FCS) 28
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Qualitative development of the PROMIS Profile v1.0-Familial Chylomicronemia Syndrome (FCS) 28
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Journal Article
Qualitative development of the PROMIS Profile v1.0-Familial Chylomicronemia Syndrome (FCS) 28
2023
Overview
Purpose
Familial chylomicronemia syndrome (FCS) is a rare genetic disorder characterized by high triglyceride levels, significant disease burden, and negative impacts on health-related quality of life. This project aimed to create a PROMIS-based patient-reported outcome measure that represents valid and important concerns for patients with FCS.
Methods
We reviewed the literature and data from a previous qualitative study of FCS to identify key FCS symptoms and impacts, which were mapped to PROMIS domains to create a pool of eligible items. Candidate items were reduced per expert feedback and patients with FCS completed cognitive interviews to confirm content validity and measure content.
Results
Literature and qualitative data review identified ten key symptoms and 12 key impacts of FCS, including abdominal pain, fatigue, difficulty thinking, and worry about pancreatitis attacks. We identified 96 items primarily from PROMIS, supplemented with items from the Quality of Life in Neurological Disorders™ (Neuro-QoL™) and the Functional Assessment of Chronic Illness Therapy (FACIT) measurement systems. This pool was reduced to 32 candidate items, which were assessed via cognitive interviews with eight participants with FCS. Cognitive interview results and additional expert feedback led to the removal of four items and finalization of the PROMIS Profile v1.0—familial chylomicronemia syndrome (FCS) 28.
Conclusions
The PROMIS Profile v1.0—familial chylomicronemia syndrome (FCS) 28 provides strong content validity for assessing quality of life among patients with FCS. The benefits of PROMIS, including norm-referenced mean values for each measure, will facilitate comparison of patients with FCS to other clinical populations.
Publisher
Springer International Publishing,Springer Nature B.V
