The My Diabetes Care Patient Portal Intervention for Mobile Devices: A Usability Study
Trial Snapshot
- Phase
- Not Applicable
- Status
- Completed
- Enrollment
- 64
- Locations
- 2
- Primary Endpoint
- Usability
Study Overview
Brief Summary
The purpose of this study is to conduct a prospective, longitudinal study on the My Diabetes Care mobile (MDC-m) intervention to assess usage patterns, user experience, and to uncover errors in functionality prior to a larger interventional trial.
Detailed Description
Up to 65 adult patients with type 2 diabetes mellitus will be enrolled and given access to My Diabetes Care mobile (MDC-m). My Diabetes Care mobile (MDC-m) is a multi-faceted patient portal intervention for mobile devices that is designed to help patients better understand their diabetes health data as well as promote and support self-management. MDC uses infographics to facilitate patients' understanding of their diabetes health data (e.g., HbA1c, LDL), incorporates motivational strategies and access to an online patient support community, and provides literacy level-appropriate and tailored diabetes self-care information. Patients will be invited by mail to be screened for enrollment in the study. Interested patients will be able to complete an electronic consent form and enroll online via Research Electronic Data Capture (REDCap™) version 5.0.8. Study participants will complete questionnaires electronically via email using REDCap™ at two time points: baseline (T0) and one-month follow-up (T1). Participants will complete an baseline questionnaire (T0) including basic demographic questions, items about computer usage and internet access, and validated measures of health literacy and eHealth literacy. Each participant will have access to the MDC-m for 1 month.
Study Design
- Study Type
- Interventional
- Allocation
- Na
- Intervention Model
- Single Group
- Primary Purpose
- Health Services Research
- Masking
- None
Eligibility Criteria
- Ages
- 21 Years to — (Adult, Older Adult)
- Sex
- All
- Accepts Healthy Volunteers
- No
Inclusion Criteria
- •Type 2 Diabetes Mellitus
- •Currently taking at least one medication for diabetes
- •Age 21 or over
- •Able to speak and read in English
- •Reliable access to a smartphone or tablet with internet access
- •Active VUMC patient web portal (known as My Health At Vanderbilt) account
Exclusion Criteria
- •Residing in a long term care facility
- •Medical condition that affects my memory or ability to think.
- •Severe visual impairment
- •Patients with unintelligible speech (e.g., dysarthria)
- •Currently participating in another diabetes-related research study
Outcomes
Primary Outcomes
Usability
Time Frame: One-month follow-up
The System Usability Scale (SUS) is a valid measure of usability and assesses users' perceptions of ease of use, likability of the interface, and overall satisfaction using a 5- point Likert scale (strongly disagree to strongly agree). The ten items are scored on a five-point Likert scale. The item scores are summed and then converted to a score ranging from 0 (worst) to 100 (best). Based on prior research, a score above 68 would be above average and a score of 85 or above suggests excellent usability. The SUS has been used in several studies of patient facing health information technology (the article describing its psychometric properties has been cited over 500 times) and has excellent internal consistency reliability (Cronbach's alpha of 0.91).
System Usage Data
Time Frame: One-month follow-up
Self-reported usage of My Diabetes Care to include total number of participants who visited MDC-m during the study period and total number of participants with who used MDC-m for 10 minutes or more during the study period.
User Experience
Time Frame: One-month follow-up
Unique study specific items to assess participants' perspectives on the usefulness of particular My Diabetes Care features and functionality.
Secondary Outcomes
- Change in Diabetes Readiness for Change(Baseline to one-month follow-up)
- Change in Medication Adherence(Baseline to one-month follow-up)
- Change in Number of Participants That Correctly Identified Definitions and Goal Ranges for Diabetes Health Measures(Baseline to one-month follow-up)
- Change in Diabetes Distress(Baseline to one-month follow-up)
- Change in Diabetes Knowledge(Baseline to one-month follow-up)
- Change in Diabetes Self-Efficacy(Baseline to one-month follow-up)
- Change in Diabetes Attitudes(Baseline to one-month follow-up)
- Change in Diabetes Self-Care (Specific Diet Adherence)(Baseline to one-month follow-up)
- Change in Diabetes Self-Care (Exercise Adherence)(Baseline to one-month follow-up)
- Change in Diabetes Self-Care (General Diet Adherence)(Baseline to one-month follow-up)
- Change in Diabetes Self-Care (Self-Monitoring of Blood Glucose Adherence)(Baseline to one-month Follow-up)
Investigators
William Martinez, MD, MS
Assistant Professor of Medicine
Vanderbilt University Medical Center