Online Tailored Decision Aid for Maternal Pertussis Vaccination in a Randomized Controlled Trial: Process Evaluation...

Area of Science:

• Public Health
• Health Informatics
• Maternal Health

Background:

• An interactive, web-based decision aid was developed to enhance informed decision-making and maternal pertussis vaccination (MPV) uptake among pregnant individuals.
• Assessing intervention reach, use, and acceptability is crucial for evaluating effectiveness and identifying successful components.

Purpose of the Study:

• To conduct a process evaluation of a web-based decision aid for maternal pertussis vaccination (MPV).
• To evaluate the reach, usage patterns, and user acceptability of the MPV decision aid among pregnant individuals.

Main Methods:

• A randomized controlled trial (RCT) analyzed reach and use of an online decision aid (web app) among pregnant participants recruited via social media and midwifery clinics.
• Reach was measured by website visits; usage data included time spent, clicks, pages visited, and interactive component engagement.
• Acceptability was assessed via a post-intervention survey, with data analyzed descriptively, comparing users and non-users.

Main Results:

• 79% of participants (463/586) accessed the decision aid. Reach was higher for first pregnancies, recruitment via midwives, and higher educational levels.
• Average engagement included 4.25 minutes spent, with most users accessing it once (56.2%) or twice (26.6%).
• Users reported high acceptability (8.0/10), with 38.9% indicating it aided their MPV decision-making.

Conclusions:

• The maternal pertussis vaccination (MPV) decision aid achieved successful reach (79%) and positive user reception.
• While reach and acceptability were strong, intervention use metrics suggest opportunities for enhancing engagement to maximize health benefits.