HLTH 5083 Module 2 Capstone Evidence Synthesis Example

Course	HLTH 5083 Capstone in Public Health
Module	Module 2
Paper type	Capstone evidence synthesis
Length	1,300 words, about 5 pages plus title and reference pages
Format	APA 7 student paper
School	American College of Education
Program	Master of Public Health
Updated	September 2026

Free sample paper for HLTH 5083 Module 2

What Works to Reduce Residential Radon Exposure: A Question-Driven Synthesis of the Evidence on Risk, Mitigation, Household Behavior, Clinical Counseling and Policy

Student Name

American College of Education

HLTH5083: Capstone in Public Health

Module 2 Assignment

Instructor Name

October 12, 2026

What this page is doingThe title promises an answer to a practical question, what works, and lists the five areas the synthesis covers, which tells the grader the review is organized by question rather than by article. The APA 7 title page lists the course and module assignment.

Purpose and Approach

The first module of this capstone framed household radon in the composite county as a common, serious and preventable problem that is poorly addressed: about half of tested homes exceed the federal action level, but only about one adult in five reports that their home has ever been tested. This paper reviews the evidence the county would need before choosing interventions. Rather than summarizing studies one after another, it is organized around five questions: How certain is the risk from radon at household levels? Which mitigation methods reduce exposure reliably? Why do households test or fail to test? What role can clinicians play? What policies have been used, and how widely?

Sources were identified through PubMed and a search of federal agency publications, using combinations of radon, residential, lung cancer, mitigation, testing and policy. Priority went to pooled analyses, systematic reviews and population-based surveys. For each question, the paper states what the evidence shows, how strong it is and what it leaves unanswered.

Question 1: How Certain Is the Risk at Household Levels?

The evidence here is the strongest of any question in this review. Before large pooled studies existed, Lubin and Boice (1997) conducted a meta-analysis of eight case-control studies that had used long-term indoor measurements and included at least 200 cases each, covering 4,263 people with lung cancer and 6,612 controls. They found a significant upward trend in risk with radon concentration, with a relative risk of about 1.14 at 150 becquerels per cubic meter, and noted that the trend was similar to what had been extrapolated from studies of miners. The pooled North American and European analyses discussed in Module 1, which used individual-level data, later confirmed the association with narrower uncertainty and found no evidence of a threshold below which radon is safe.

Taken together, the evidence meets the usual criteria for causation: consistent findings across countries and study designs, a dose-response relationship, biological plausibility from radiation biology and agreement with occupational studies. The remaining uncertainty concerns the exact size of the risk at low levels, not whether it exists. For planning, this means the county can treat reduction of high household levels as an evidence-based cancer prevention strategy without waiting for further research.

Question 2: Which Mitigation Methods Work?

Khan et al. (2019) systematically reviewed experimental and observational studies of radon interventions in homes published from 1990 to 2018, with emphasis on North America and Europe. They found that active sub-slab or sump depressurization, in which a small fan pulls soil gas out from under the slab and discharges it outdoors at roofline, was in most cases more effective at producing large and sustained reductions than passive approaches such as sealing cracks, installing membranes, simple ventilation or filtration. They also noted that the best choice depends on the starting level, entry routes, building design and age, and local geology and climate, and that some homes need a combination of methods installed by a trained professional to stay below the action level.

The review identified practical supports for implementation, including training for the construction industry, information for residents, public funding and building codes. Its main gap for this capstone is economic: the authors did not evaluate the cost of mitigation methods, so the county will need local cost data. The quality of the underlying studies varied, and few followed homes for many years, so periodic retesting after mitigation remains a sensible safeguard.

Question 3: Why Do Households Test or Fail to Test?

Low testing is an old problem. Wang et al. (2000) surveyed 1,209 New York State residents in the mid-1990s and found that 82% had heard of radon, but only 21% had accurate knowledge of it, and only 15% of those who were aware had tested their homes. Awareness rose with education, and public awareness campaigns targeted to high-radon areas appeared to have some effect. The gap between hearing of radon and acting on it closely resembles the county's survey results a generation later, which suggests that general awareness campaigns alone have not closed the gap.

Weinstein and Sandman (1992) offered an explanation that remains useful. Drawing on seven studies of home radon testing, they proposed the precaution adoption process model, in which people move through distinct stages, from unaware, to aware but unengaged, to deciding, to deciding not to act or planning to act, to acting and maintaining the action. The model's central claim is that different factors move people between different stages: information about the hazard may move someone from unaware to aware, but personal risk information, such as local test results, and practical help, such as a free kit, are more likely to move someone from deciding to acting. For the county, where most residents are aware but not engaged, the model implies that more general information will have limited effect and that interventions should make testing personal and easy.

Question 4: What Role Can Clinicians Play?

Clinical encounters are an obvious and underused opportunity. Stanifer et al. (2025) surveyed health care providers in Kentucky who conduct shared decision-making visits for lung cancer screening and found that providers counseled frequently about tobacco but almost never about radon, were largely unsure of their beliefs about radon and rated their confidence in radon counseling below their confidence in tobacco counseling. Only 149 of 1,000 providers responded, so the findings may not represent all providers, but they point to a clear gap. Lung cancer screening visits reach exactly the population at greatest combined risk, current and former smokers, and a brief recommendation to test the home, paired with a kit, would add little time. The evidence on whether such counseling increases testing is thin, which is a gap this capstone's evaluation plan can help fill.

Question 5: What Policies Have Been Used?

Policy approaches include requirements for radon-resistant construction in new buildings, testing requirements for schools, child care centers and rental housing, and disclosure of known radon results when homes are sold. Khan et al. (2019) noted that most Canadian provinces had revised building codes by 2017 to require radon-control measures in all new buildings. In the United States, adoption is uneven. A CDC analysis of nationally representative data from the 2012 School Health Policies and Practices Study found that among school districts in counties with the highest predicted indoor radon, only 42.4% had policies requiring radon testing and 37.5% had policies for radon-resistant new construction (Foster & Everett Jones, 2016). Rigorous evaluations of how these policies change population exposure are scarce, especially for rental housing and disclosure laws, so policy recommendations will rest partly on logic and on the strength of the underlying risk evidence.

Synthesis and Gaps

Across the five questions, the evidence is strongest where it is least needed for decision-making and weakest where it is most needed. The causal link between household radon and lung cancer is firmly established, and the effectiveness of active depressurization is well documented. What is much less certain is how to get people to test and mitigate, how much clinician counseling adds, and how much building, rental and disclosure policies reduce exposure in practice. The behavioral evidence is also dated, drawing heavily on surveys and models from the 1990s.

These patterns shape the capstone. Interventions should combine approaches that make testing personal and easy, such as free kits distributed through trusted channels, with financial help for mitigation, because awareness alone has repeatedly failed to change behavior. Policy options such as radon-resistant new construction should be considered for their long-term reach, and every component should be evaluated so that the county adds to the evidence rather than only consuming it. The next module will weigh these options against the county's causes, capacities and values.

References

Foster, S., & Everett Jones, S. (2016). Association of school district policies for radon testing and radon-resistant new construction practices with indoor radon zones. International Journal of Environmental Research and Public Health, 13(12), 1234. https://doi.org/10.3390/ijerph13121234

Khan, S. M., Gomes, J., & Krewski, D. R. (2019). Radon interventions around the globe: A systematic review. Heliyon, 5(5), e01737. https://doi.org/10.1016/j.heliyon.2019.e01737

Lubin, J. H., & Boice, J. D. (1997). Lung cancer risk from residential radon: Meta-analysis of eight epidemiologic studies. Journal of the National Cancer Institute, 89(1), 49-57. https://doi.org/10.1093/jnci/89.1.49

Stanifer, S. R., Rademacher, K., Sedio, W., Cheek, N., Wiggins, A. T., Rayens, M. K., & Hahn, E. J. (2025). Radon and tobacco risk counseling during lung cancer screening shared decision-making. Journal of the American College of Radiology, 22(12), 1473-1482. https://doi.org/10.1016/j.jacr.2025.08.052

Wang, Y., Ju, C., Stark, A. D., & Teresi, N. (2000). Radon awareness, testing, and remediation survey among New York State residents. Health Physics, 78(6), 641-647. https://doi.org/10.1097/00004032-200006000-00006

Weinstein, N. D., & Sandman, P. M. (1992). A model of the precaution adoption process: Evidence from home radon testing. Health Psychology, 11(3), 170-180. https://doi.org/10.1037/0278-6133.11.3.170

The HLTH 5083 Module 2 assignment instructions

The capstone's second module typically asks you to review and synthesize the literature on the problem you defined in Module 1. Prompts usually want the evidence organized by theme or question, the strength and limits of the studies discussed, and gaps identified. Some sections also ask you to describe your search strategy and the databases you used. Keep your questions tied to decisions the capstone will make, usually three to six of them, so that the synthesis feeds directly into the analysis and plan. Use peer-reviewed research and authoritative agency reports, and favor systematic reviews and pooled studies where they exist. Look at Canvas for the minimum number of sources and whether an evidence table is required.

Inside the HLTH 5083 Module 2 example

The example opens by stating the five questions and the search approach. Each question then receives its own section: household risk, mitigation methods, household behavior, clinician counseling and policy. Within each, the paper reports what the strongest sources found, notes their limits, such as a low survey response rate or missing cost data, and states what the finding means for the county. A closing synthesis compares the strength of evidence across questions and turns the gaps into guidance for the options analysis that follows in Module 3. Each question ends on a plain statement of what the county can safely assume and what it still needs to test locally.

Where the points sit in the HLTH 5083 Module 2 rubric

Rubrics for the synthesis generally reward a structure built on questions the capstone must settle, with each study placed where it helps answer one. Graders look for critical appraisal rather than description: noting design, sample size, age of the evidence and how well it applies to your population. Explicitly identifying gaps shows mature judgment and prepares the ground for later modules. Evidence should connect to the capstone question throughout. A clear description of how sources were found, current and credible references, and consistent APA 7 citations complete a strong paper. Where evidence is old, say so and explain why it still applies, since graders notice when a capstone leans on dated work without comment.

HLTH 5083 Module 2 help: mistakes that cost points

Many capstone students write a Module 2 paper that reads like an annotated bibliography, which usually costs points. If you have a stack of articles but no structure, we can help you turn them into questions, compare the findings and decide what the evidence means for your plan. Send the problem statement from Module 1, your sources if you have them and the rubric, and our writers can draft a Module 2 synthesis that answers your capstone's key questions, rates the evidence honestly and sets up the options analysis in the next module, keeping the same problem and population you defined at the start.

Write yours, or have the desk draft it

This paper is an original model document written by our desk, not a submitted student paper and not an official American College of Education document. Read it for the moves, then write your own to the instructions in your classroom. If you want one built to your exact prompt and rubric, the first custom sample is free and arrives in 24 to 48 hours.

More HLTH 5083 and Master of Public Health sample papers

HLTH 5083 Module 2 questions, answered

What does HLTH5083 Module 2 usually ask for?

The second HLTH5083 module commonly asks for a synthesis of the research on your capstone problem, organized by theme or question, that judges the strength of the evidence and identifies gaps your plan must work around.

What is the difference between a summary and a synthesis?

A summary describes studies one by one. A synthesis groups them around questions, compares what they found, weighs their quality and draws conclusions that none of them states alone.

How do I rate the strength of evidence?

Consider study design, size, consistency across studies and how directly the studies address your population and question. Pooled analyses and systematic reviews usually carry more weight than single surveys.

Where can I find a free HLTH 5083 Module 2 sample paper?

This page presents a full Module 2 synthesis on residential radon, built around five questions on risk, mitigation, household behavior, clinician counseling and policy, with the evidence rated and its gaps named.

How many sources does a capstone synthesis need?

Follow your rubric, but quality and coverage matter more than count. Make sure each question in your synthesis is answered by the strongest sources available.