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Health Systems and Self-Reported Medication Adherence in Patients with Hypertension: A cross-sectional comparison of

Marshall Tulloch-Reid1, Selena Lewis1, Carene Lindsay1

  • 1The University of the West Indies, Mona, Jamaica.

Research Square
|September 15, 2025
PubMed

Insights

Patients in Jamaica

Area of Science:

  • Public Health
  • Health Systems Research
  • Cardiovascular Disease Management

Background:

  • Robust health care systems are crucial for effective blood pressure control.
  • Medication adherence is a key strategy for managing hypertension.
  • Latin America and the Caribbean face challenges in hypertension management.

Purpose of the Study:

  • To examine the influence of differing health systems on antihypertensive medication adherence.
  • To compare medication adherence in Jamaica (manual system) versus Colombia (electronic system).
  • To identify factors associated with medication adherence in hypertensive patients during the COVID-19 pandemic.

Main Methods:

  • The Caribbean and South American Team Based Strategies to Control Hypertension (CATCH) study involved 576 hypertensive patients.
  • Telephone interviews were conducted between August 2021 and February 2022.
  • Self-reported medication adherence was measured using the IMPACTS-MAS questionnaire; multivariable logistic regression was used.

Main Results:

  • Jamaican patients reported significantly higher rates of medium/low medication adherence (49.3%) compared to Colombian patients (11.8%).
  • Jamaicans experienced longer wait times but more pharmacist discussions; Colombians had more doctor discussions.
  • Jamaican patients had a significantly higher odds of medium/low adherence (OR: 6.78).

Conclusions:

  • Health system differences significantly impact antihypertensive medication adherence in Jamaica and Colombia.
  • Strategies to improve medication adherence should consider health system structures and patient-provider interactions.
  • Further research is needed to explore specific health system factors influencing adherence in the region.

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