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Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
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Longitudinal studies are also widely used in other medical and social science fields. For instance, in cardiovascular research, they can monitor patients' health over decades to identify risk factors for heart disease, such as high cholesterol or smoking, and evaluate the long-term effectiveness of preventive measures. Similarly, in mental health studies, researchers might follow individuals from adolescence into adulthood to understand the development and progression of conditions like...
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Observational studies are a type of analytical study where researchers observe events without any interventions. In other words, the researcher does not influence the response variable or the experiment's outcome.
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Data collection refers to a systematic way of obtaining, observing, measuring, and analyzing accurate information. Observational studies are one of the most widely used methods of data collection. It involves collecting data by observing the behavior and physical characteristics of a sample without making any modifications to the sample.
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Updated: May 11, 2025

Methodology for Establishing a Community-Wide Life Laboratory for Capturing Unobtrusive and Continuous Remote Activity and Health Data
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Technical Requirements, Design, and Automation Process for a Statewide Registry-Based Tailored Text Messaging System:

Deborah Ogunsanmi1,2,3, Jerica Chambers2,3, Asos Mahmood2,3,4

  • 1College of Graduate Health Sciences, University of Tennessee Health Science Center, Memphis, TN, United States.

JMIR Research Protocols
|April 18, 2025
PubMed
Summary

The Heart Health Messages program uses low-cost text messages to help patients manage chronic conditions. This study assessed its feasibility for widespread use in improving cardiovascular health outcomes.

Keywords:
chronic diseaseclinical informaticselectronic health recordstelehealthtelemedicinetext messaging

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Area of Science:

  • Mobile Health (mHealth)
  • Cardiovascular Disease Prevention
  • Health Informatics

Background:

  • Tailored text messaging is a cost-effective mobile health intervention for chronic cardiometabolic conditions.
  • Ubiquitous mobile phone access enables broad reach, but automation and low-cost dissemination pose implementation challenges.

Purpose of the Study:

  • To describe the protocol for a longitudinal observational study on the feasibility of an automated, registry-based tailored text messaging system (Heart Health Messages program).
  • To outline the technical requirements, architecture, automation process, and implementation challenges of the Heart Health Messages program for cardiovascular event risk reduction.

Main Methods:

  • Utilized the Tennessee Population Data Network to identify high-risk cardiovascular disease patients.
  • Employed Twilio for sending tailored invitations and enrollment surveys, followed by personalized text messages based on selected frequency.
  • Implemented monthly check-in surveys for adherence assessment and quarterly surveys for data updates over a 12-month intervention period.

Main Results:

  • Identified 18,974 eligible patients across 2 health systems.
  • Phased implementation (HHM 1.0) reached 225 (Phase 1), 5,288 (Phase 2), and 13,461 (Phase 3) patients.
  • Achieved enrollment rates of approximately 2% in Phase 1 and 3% in Phases 2 and 3, with ongoing efforts to enhance participation.

Conclusions:

  • The Heart Health Messages program offers a scalable, low-cost tailored text messaging intervention for broader dissemination.
  • The system demonstrates potential for improving health outcomes in individuals with chronic conditions.
  • Further strategies are being developed to optimize patient engagement and program rollout.