Tuberculosis remains one of the world’s deadliest infectious diseases. Indonesia ranks among the countries with the highest TB burden globally, alongside India and China. National health reports show that hundreds of thousands of TB cases are recorded annually, with treatment adherence continuing to be a major challenge. In regions like Mimika, where healthcare access and disease burden intersect, improving patient compliance is essential to achieving national and global TB elimination targets.
The study was conducted at the Central Market Health Center in Mimika Regency and involved 158 pulmonary TB patients. Researchers used a cross-sectional design, meaning data were collected at a single point in time from all registered patients. Information was gathered through structured questionnaires and analyzed using statistical methods to identify relationships between patient characteristics and medication adherence.
The analysis examined several potential factors, including age, gender, presence of comorbidities, side effects of medication, and distance to healthcare facilities. The goal was to determine which of these variables significantly influenced whether patients consistently took their prescribed TB medication.
Key Findings
The study delivers a clear and focused conclusion: comorbid conditions are the most influential factor affecting adherence to TB treatment.
- Around 79.7% of patients were classified as adherent to their medication regimen.
- Approximately 20.3% of patients were non-adherent, placing them at risk of treatment failure.
- Patients with comorbidities were nearly three times more likely to be non-adherent compared to those without.
- Advanced statistical analysis showed that comorbidities increased the likelihood of non-adherence by more than five times.
- Other factors including age, gender, medication side effects, and proximity to healthcare facilities did not show a statistically significant relationship with adherence.
These findings indicate that while logistical barriers such as distance to clinics are often assumed to affect adherence, clinical complexity plays a more decisive role. Patients managing multiple health conditions face greater challenges in maintaining consistent treatment routines.
The research also found a tendency for gender to influence adherence, although it did not reach statistical significance. This suggests that behavioral or social factors may still play a role, but require further investigation.
Why Comorbidities Matter
Comorbid conditions such as diabetes mellitus or HIV/AIDS complicate TB treatment in several ways. Patients often need to manage multiple medications simultaneously, increasing the risk of side effects and drug interactions. Physical weakness and immune system impairment can also reduce a patient’s ability to maintain strict treatment schedules.
According to Londong and her colleagues from Cenderawasih University, “comorbid conditions significantly influence patient adherence, requiring more intensive monitoring and tailored healthcare interventions.” This insight reinforces the need for integrated care models that address both TB and accompanying illnesses.
The study aligns with broader public health theories such as the Health Belief Model, which explains that patient behavior is shaped by perceived risks, benefits, and barriers. In the context of TB, patients with additional health burdens may perceive treatment as more difficult or overwhelming, reducing their likelihood of adherence.
Implications for Public Health and Policy
The findings have immediate relevance for healthcare providers, policymakers, and public health programs in Indonesia and similar high-burden countries.
First, TB control programs should prioritize patients with comorbidities as a high-risk group for non-adherence. Targeted interventions could include closer supervision, personalized counseling, and integrated treatment plans that address multiple conditions simultaneously.
Second, healthcare systems need to strengthen coordination between TB services and chronic disease management. For example, combining TB treatment with diabetes or HIV care in a single program could reduce patient burden and improve outcomes.
Third, the study highlights the importance of patient-centered care. Rather than focusing solely on infrastructure or access, healthcare strategies must consider the lived experiences and health complexities of patients.
Improving adherence is not only about ensuring patients take their medication—it is also about preventing drug-resistant TB, which is more difficult and costly to treat. By addressing the root causes of non-adherence, such as comorbid conditions, health systems can improve treatment success rates and reduce long-term public health risks.
Author Profile
Derlinda Natalia Londong is a Master of Public Health graduate student at the Faculty of Public Health, Cenderawasih University, Jayapura. The research team includes Hasmi, S.KM., M.Kes., Yacob Ruru, Sarce Makaba, Arius Togodly, and Muhammad Akbar Nurdin, all affiliated with Cenderawasih University. Their expertise spans epidemiology, public health, and infectious disease control, with a focus on tuberculosis and treatment adherence.
Source
This study reinforces a crucial message for global health: successful TB treatment depends not only on medical protocols, but also on understanding the complex health conditions patients face every day.
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