Accepted for/Published in: JMIR Formative Research
Date Submitted: Mar 26, 2021
Date Accepted: May 16, 2021
Date Submitted to PubMed: May 17, 2021
The Development of a Digital Patient Reported Outcome Measurement for Adults with Chronic Disease: The Parsley Symptom Index
ABSTRACT
Background:
The monitoring and management of chronic illness has always been a challenge. Patient Reported Outcome Measures (PROMs) can be powerful tools for monitoring symptoms and guiding treatment of chronic diseases, but the available PROM tools are either too broad or too disease specific for the needs of a primary care practice focused on longitudinal care.
Objective:
In this study we describe the development and preliminary validation of the Parsley Symptom Index © (PSI).
Methods:
This prospective cohort study took place from January 5, 2018 to June 05, 2020 among a sample of 4621 adult patients at Parsley Health (PH). After a review of literature, followed by binning and winnowing of potential items, a 45-item PROM that also served as a Review of Systems (ROS) was developed. The PSI was deployed and completed by patients via an online portal. Construct and face validity was performed by clinicians, tested on patients, and feasibility was measured by response rate, completion rate, and percentage of missing data.
Results:
The response rate for 12175 collected PSI’s was 93.7% (4331/4621) with a 100% item completion rate. A confirmatory factor analysis confirmed the model structure was satisfactory by an CFI of .943, TLI of .938, and RMSEA of .028.
Conclusions:
A 45-item ROS style PROM designed to capture chronic disease symptoms was developed, and preliminary validation suggests that the PSI can be deployed, completed, and helpful to both patients and clinicians.
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