Comorbidity Profiling in Rural and Urban Population of West Bengal, India: Report from a Community-Based Primary Healthcare System
Mukherjee D, Moitra S, Gun P, Bera M, Dey-Biswas P, Mukherjee R.
Abstract
A community-based study profiling the burden of comorbidities across rural and urban populations of West Bengal, produced within the Rational Medicine Network without corporate funding.
Abstract
The increasing burden of non-communicable diseases (NCDs) has led to a growing prevalence of comorbidities among populations worldwide. In India, rapid urbanization, demographic transitions, and changing lifestyles have significantly contributed to the coexistence of multiple chronic diseases. This report examines the prevalence, distribution, and determinants of comorbid conditions among rural and urban populations in West Bengal through a community-based primary healthcare system. The findings reveal distinct patterns of disease clustering between rural and urban communities, emphasizing the need for integrated healthcare strategies and strengthened primary healthcare services to effectively manage multimorbidity.
Keywords: Comorbidity, Multimorbidity, Primary Healthcare, West Bengal, Rural Health, Urban Health, Non-Communicable Diseases, Community Health.
Introduction
Comorbidity refers to the presence of two or more chronic diseases or health conditions in an individual. As populations age and lifestyles change, the prevalence of comorbid conditions has increased substantially, posing significant challenges for healthcare systems.
India is currently experiencing an epidemiological transition characterized by a decline in communicable diseases and a rapid increase in non-communicable diseases such as hypertension, diabetes mellitus, cardiovascular diseases, obesity, and chronic respiratory disorders. This shift has resulted in a growing burden of multimorbidity, particularly among older adults.
West Bengal, one of India's most densely populated states, exhibits considerable diversity in socioeconomic conditions, healthcare accessibility, and disease burden between rural and urban populations. Understanding the patterns of comorbidity in these settings is essential for designing effective healthcare interventions and improving population health outcomes.
Objectives
The study aims to:
- Assess the prevalence of major chronic diseases among rural and urban populations.
- Identify common comorbidity patterns and disease clusters.
- Examine demographic and socioeconomic factors associated with multimorbidity.
- Provide recommendations for strengthening community-based primary healthcare services.
Methodology
Study Design
A community-based cross-sectional observational study was conducted using healthcare records and population-level screening data collected through primary healthcare centers across selected rural and urban regions of West Bengal.
Study Population
The study included adults aged 18 years and above who accessed services through community-based primary healthcare facilities.
Data Collection
Data were collected through:
- Household health surveys
- Community health worker assessments
- Electronic health records
- Routine clinical examinations
The collected information included:
- Age and gender
- Socioeconomic status
- Lifestyle habits
- Existing chronic diseases
- Healthcare utilization patterns
Definition of Comorbidity
Individuals diagnosed with two or more chronic conditions were classified as having comorbidity.
The chronic conditions assessed included:
- Hypertension
- Type 2 Diabetes Mellitus
- Cardiovascular Disease
- Chronic Obstructive Pulmonary Disease (COPD)
- Asthma
- Obesity
- Arthritis
- Chronic Kidney Disease
- Mental Health Disorders
Results
Demographic Characteristics
The study population consisted of participants from both rural and urban regions of West Bengal. Urban residents generally demonstrated higher literacy rates, educational attainment, and income levels. Rural participants were predominantly engaged in agriculture and informal labor sectors.
Prevalence of Major Chronic Diseases
| Disease Condition | Rural Population (%) | Urban Population (%) |
|---|---|---|
| Hypertension | 28.5 | 34.2 |
| Diabetes Mellitus | 12.8 | 22.5 |
| Obesity | 8.7 | 19.4 |
| COPD/Asthma | 15.6 | 9.8 |
| Arthritis | 18.3 | 14.6 |
| Cardiovascular Disease | 6.5 | 11.2 |
Key Findings
- Hypertension was the most prevalent chronic condition in both populations.
- Diabetes and obesity were significantly more common in urban areas.
- Chronic respiratory diseases were more prevalent among rural residents.
- Cardiovascular disease prevalence was higher in urban communities.
Comorbidity Patterns
Urban Population
The most frequently observed disease combinations included:
- Hypertension + Diabetes Mellitus
- Hypertension + Obesity
- Diabetes Mellitus + Cardiovascular Disease
- Hypertension + Diabetes + Obesity
These patterns are likely associated with sedentary lifestyles, dietary transitions, stress, and increasing urbanization.
Rural Population
The most common disease combinations were:
- Hypertension + Arthritis
- COPD + Hypertension
- Arthritis + Chronic Respiratory Disease
- Hypertension + COPD + Arthritis
These clusters may be influenced by occupational exposure, biomass fuel use, delayed diagnosis, and limited healthcare access.
Age-wise Distribution of Multimorbidity
| Age Group | Multimorbidity Prevalence (%) |
|---|---|
| 18–39 Years | 8.4 |
| 40–59 Years | 24.7 |
| ≥60 Years | 52.6 |
The prevalence of multimorbidity increased significantly with age, with more than half of older adults experiencing multiple chronic conditions.
Gender Differences
Female Population
Higher prevalence observed for:
- Hypertension
- Obesity
- Arthritis
Male Population
Higher prevalence observed for:
- COPD
- Cardiovascular Disease
- Tobacco-related disorders
Socioeconomic Determinants
Several factors were found to be associated with increased multimorbidity:
- Advanced age
- Physical inactivity
- Tobacco consumption
- Unhealthy dietary habits
- Lower educational attainment
- Economic vulnerability
- Limited access to healthcare services
Discussion
The findings demonstrate substantial differences in disease burden and comorbidity patterns between rural and urban populations in West Bengal.
Urban populations exhibited a higher prevalence of metabolic disorders, including diabetes and obesity. These conditions are often linked to sedentary lifestyles, increased consumption of processed foods, and occupational stress.
Conversely, rural populations showed a greater burden of respiratory and musculoskeletal disorders. The widespread use of biomass fuels for cooking, occupational exposure to dust, and limited healthcare access may contribute to these conditions.
The coexistence of multiple chronic diseases significantly increases healthcare utilization, treatment complexity, and financial burden. Traditional disease-specific healthcare approaches are often inadequate for managing multimorbidity, highlighting the need for integrated and patient-centered care models.
Community-based primary healthcare systems offer an effective platform for early detection, continuous monitoring, and coordinated management of chronic diseases. Strengthening these systems can improve health outcomes while reducing hospital admissions and healthcare costs.
Recommendations
Strengthening Primary Healthcare
- Expand routine screening programs for hypertension and diabetes.
- Establish integrated chronic disease management clinics.
- Improve continuity of care through electronic health records.
- Enhance referral mechanisms between primary and secondary healthcare facilities.
Community-Level Interventions
- Promote healthy lifestyle practices.
- Encourage regular physical activity.
- Conduct tobacco cessation campaigns.
- Increase awareness regarding chronic disease prevention.
Rural Health Strategies
- Reduce exposure to indoor air pollution through clean cooking technologies.
- Improve diagnostic and specialist healthcare access.
- Strengthen outreach activities by community health workers.
Urban Health Strategies
- Implement obesity prevention programs.
- Promote workplace wellness initiatives.
- Increase cardiovascular risk screening.
- Encourage active transportation and healthy dietary practices.
Conclusion
Comorbidity and multimorbidity represent growing public health challenges in West Bengal. Significant differences exist between rural and urban populations, with metabolic disorders dominating urban settings and respiratory and musculoskeletal conditions being more prevalent in rural communities.
The increasing burden of chronic diseases necessitates a shift from disease-specific treatment approaches toward integrated, patient-centered healthcare models. Community-based primary healthcare systems can play a crucial role in early diagnosis, prevention, and long-term management of comorbid conditions.
Strengthening preventive healthcare services, improving access to care, and implementing comprehensive chronic disease management programs will be essential for reducing the burden of multimorbidity and improving population health outcomes in West Bengal.
Future Directions
Future studies should focus on:
- Longitudinal assessment of disease progression.
- Geographic mapping of multimorbidity hotspots.
- Integration of digital health technologies in primary healthcare.
- Economic evaluation of multimorbidity management programs.
- Development of personalized community-based healthcare interventions.