#### 41670A public health researcher is analyzing data from three low-income neighborhoods. The neighborhoods have populations of 12,000, 18,000, and 24,000 respectively. If 15% of the first, 20% of the second, and 25% of the third residents suffer from uncontrolled hypertension, what is the overall percentage of residents with uncontrolled hypertension across all three neighborhoods?

["Title: Analyzing the Scale of Uncontrolled Hypertension Across Three Low-Income Neighborhoods", "In the ongoing effort to understand and combat chronic disease in underserved communities, public health researchers are turning to detailed demographic data analysis to assess conditions like uncontrolled hypertension. A recent study examined three low-income neighborhoods with differing population sizes: 12,000, 18,000, and 24,000 residents. By calculating both absolute and weighted average percentages of individuals with uncontrolled hypertension, the research offers critical insights into health disparities and informs targeted interventions.", "## Population and Hypertension Prevalence by Neighborhood", "The three neighborhoods have the following population and hypertension rates:", "- Neighborhood A: 12,000 residents; 15% with uncontrolled hypertension\n- Neighborhood B: 18,000 residents; 20% with uncontrolled hypertension\n- Neighborhood C: 24,000 residents; 25% with uncontrolled hypertension", "## Calculating Number of Affected Residents", "First, compute the actual number of individuals with uncontrolled hypertension in each area:", "- Neighborhood A:\n ( 12,000 \ imes 0.15 = 1,800 )\n- Neighborhood B:\n ( 18,000 \ imes 0.20 = 3,600 )\n- Neighborhood C:\n ( 24,000 \ imes 0.25 = 6,000 )", "Total number of affected residents:\n( 1,800 + 3,600 + 6,000 = 11,400 )", "## Total Population Across All Three Neighborhoods", "Sum the populations:\n( 12,000 + 18,000 + 24,000 = 54,000 )", "## Overall Percentage of Affected Residents", "To determine the overall percentage, divide total affected individuals by total population and multiply by 100:", "[\n\ ext{Overall Percentage} = \left( \frac{11,400}{54,000} \right) \ imes 100 \approx 21.11%\n]", "Thus, approximately 21.1% of residents across all three neighborhoods suffer from uncontrolled hypertension.", "## Interpretation and Public Health Implications", "This weighted average reveals a significant burden of uncontrolled hypertension, especially in Neighborhood C, where the rate reaches 25%. The disparity in weighted percentages highlights how population size influences the overall health outcome—despite higher prevalence in the larger neighborhood, proportional burden varies, affecting resource planning and intervention strategies.", "For public health officials, this data underscores the need for tailored outreach, accessible screening programs, and improved disease management in low-income settings. Addressing uncontrolled hypertension could reduce long-term risks of heart attack, stroke, and kidney disease, particularly where healthcare access remains limited.", "## Conclusion", "By integrating population size with localized hypertension rates, the study provides a nuanced view of health inequities in underserved communities. With 21.1% of residents living with uncontrolled hypertension across the three neighborhoods, targeted research and action are essential to improve cardiovascular health outcomes and promote health equity.", "---", "Keywords: ##### 41670A, public health research, hypertension prevalence, uncontrolled hypertension, low-income neighborhoods, health disparities, population data analysis, chronic disease burden, community health metrics, public health epidemiology", "Meta Description: A comprehensive analysis of uncontrolled hypertension rates across three low-income neighborhoods reveals a 21.1% overall prevalence, emphasizing urgent needs for targeted interventions in public health."]