About this trial
The goal of the ADHERE-ASCVD study is to evaluate and optimize patient-facing messaging strategies to improve statin refill and adherence among adults with atherosclerotic cardiovascular disease (ASCVD) or diabetes.
The main questions it aims to answer are:
1. Do different outreach methods (such as text messages, secure portal messages, or email) increase short-term statin refill compared to usual care? 2. Among patients who do not initially refill their prescription, does changing the outreach method improve refill rates?
The team with operational partners will evaluate the comparitive effectivessness of multiple messaging strategies delivered through existing health system communication channels, including SMS (text messaging), secure patient portal messages, non-secure email, and usual care (no additional outreach).
Participants
* Receive an initial outreach message encouraging statin refill (or usual care) Be monitored for statin refill within 14 days * Potentially receive a second outreach message using the same or a different communication method if they do not initially refill their prescription * Have their medication refill patterns tracked over time, including longer-term adherence outcomes
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Age ≥18 years
Active Kaiser Permanente Northern California (KPNC) membership
Diagnosis of atherosclerotic cardiovascular disease (ASCVD) or diabetes and inclusion in the Preventing Heart Attacks and Strokes Everyday (PHASE) Registry
No statin prescription fill within the prior 3 months
Disqualifiers
Documented allergic reaction or contraindication to statin therapy
Receiving hospice care
Medicare beneficiaries
Other exclusions applied per operational standard practice
Trial design
Sequential
Treatments tested in this trial
SMS (Initial Outreach)
BehavioralParticipants will receive an initial SMS (text message) encouraging statin refill. Messages may include reminder prompts and interactive features implemented through automated keyword-triggered responses that provide refill instructions or educational information.
Secure Portal Message (Initial Outreach)
BehavioralParticipants will receive an initial secure message through the kp.org patient portal encouraging statin refill. Messages are delivered within the secure portal environment and may include informational and reminder content.
Non-secure Email (Initial Outreach)
BehavioralParticipants will receive an initial non-secure email encouraging statin refill. Emails may include informational content and reminders but are delivered outside of the secure patient portal.
SMS (Follow-up for Non-responders)
BehavioralParticipants who do not refill their prescription within 14 days of the initial outreach will receive a follow-up SMS (text message) encouraging statin refill. Messages may include reminder prompts and interactive features implemented through automated keyword-triggered responses that provide refill instructions or educational information.
Secure Portal Message (Follow-up for Non-responders)
BehavioralParticipants who do not refill their prescription within 14 days of the initial outreach will receive a follow-up secure portal message through the kp.org patient portal encouraging statin refill. Messages are delivered within the secure portal environment and may include informational and reminder content.
Non-secure Email (Follow-up for Non-responders)
BehavioralParticipants who do not refill their prescription within 14 days of the initial outreach will receive a follow-up non-secure email encouraging statin refill. Emails may include informational content and reminders but are delivered outside of the secure patient portal.
Treatment groups
13
Treatment groupsSee each treatment group below.
Trial outcomes
Primary outcomes
Statin refill after message delivery
Proportion of participants who refill a statin prescription following message delivery (first-stage intervention) or, among non-responders, following second-stage messaging. Refill status will be determined using pharmacy dispensing records.
Secondary outcomes
Time to statin refill
Time from message delivery (first-stage or second-stage, as applicable) to statin refill, measured using pharmacy dispensing records. Participants who do not refill will be censored at disenrollment, death, or end
Statin refill
Proportion of participants who refill a statin prescription following message delivery (first-stage or second-stage, as applicable), based on pharmacy dispensing records.
Statin persistence
Proportion of participants who remain persistent with statin therapy, defined as continuous statin use without a gap exceeding 60 days between prescription fills.
Statin adherence (proportion of days covered)
Adherence to statin therapy measured as the proportion of days covered (PDC), defined as the number of days with statin supply available divided by the number of days in the observation period. Adherence will be assessed as both a continuous measure and as a binary indicator using a threshold of ≥80%.
Sponsors and contacts
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