PUBH 4900 Week 4 Exclusion Argument Example

Course	PUBH 4900 Capstone in Public Health
Week	Week 4
Paper type	Exclusion argument
Length	About 530 words, 4 pages
Format	APA 7 student paper
School	Walden University
Program	BS in Public Health
Updated	October 2026

Free sample paper for PUBH 4900 Week 4

What the Capstone Leaves Out and Why That Is Honest: An Exclusion Argument for a Study of the Evidence on San Francisco's Flavored Tobacco Sales Restriction and Youth Smoking

Student Name

Walden University

PUBH 4900: Capstone in Public Health

Instructor Name

Month Day, Year

What this page is doingThe title claims honesty for the exclusions, which the brief then has to earn by showing each one narrows the question rather than dodging it.

What the Capstone Leaves Out and Why That Is Honest: An Exclusion Argument for a Study of the Evidence on San Francisco's Flavored Tobacco Sales Restriction and Youth Smoking

Why Exclusions Need Arguing

A capstone question can drift by addition as easily as by neglect. Each exclusion below removes something a reader might expect to see, and each comes with the reason it was removed and what it costs. The question stays exactly as approved in Week 2; in short, whether the San Francisco smoking-increase claim survives the published record.

What this page is doingRestating the approved question at the top makes every exclusion that follows checkable against it.

Exclusion 1: Vaping as an Outcome

Teen vaping is the reason most flavor restrictions were passed, so leaving it out looks odd. The original analysis left it out too, explaining that California legalized recreational cannabis the same year the restriction took effect and that the survey's vaping questions did not say what was being vaped (Friedman, 2021). Any vaping trend from those years mixes nicotine and cannabis. Including it would add a figure I could not interpret. The cost is real: the capstone cannot say whether the policy reduced the behavior it was mainly aimed at.

Exclusion 2: Students Aged 18 and Older

The claim under test concerns minors, because the original analysis restricted its sample to high school students younger than 18 (Friedman, 2021). Older students are fewer, often closer to graduation and more likely to have friends who can buy for them, so mixing them in would change the population the claim describes. Matching the original restriction keeps the capstone's population identical to the claim's, at the cost of saying nothing about 18-year-old seniors.

Exclusion 3: A New Estimate

I will not produce my own estimate of the policy's effect. The fielding dates that matter are not in the public files, and a reanalysis would inherit the same timing problem it is meant to test. The capstone appraises evidence; it does not add to it.

Exclusion 4: Other Cities as Subjects

Oakland's partial restriction and Massachusetts's local restrictions will appear as context, since they show what other evaluations have found. Oakland youth smoking fell from 4.4% to 2.4% between 2017 and 2019 after its convenience store restriction (Liu et al., 2023), and Massachusetts counties with more extensive restrictions saw declines in teen cigarette and e-cigarette use (Hawkins et al., 2022). Neither will be judged on its own merits. Doing so would turn a focused appraisal into a literature review.

Exclusion 5: The Later Statewide Restriction

California later adopted a statewide restriction on flavored tobacco. It falls outside the question's time frame and would confound any later San Francisco data.

What These Exclusions Do Not Hide

None removes evidence that points against my expected answer. The original analysis is included in full, along with its robustness checks. The review literature, which grades the quality of local flavor restriction evaluations as uneven (Rogers et al., 2022), is included as context for how much weight any single study should carry.

Cost Summary

The capstone will be narrower than a reader might want. It will answer one question about one claim, and say nothing about whether flavor restrictions are good policy overall. That narrowness is what makes the answer defensible.

References

Friedman, A. S. (2021). A difference-in-differences analysis of youth smoking and a ban on sales of flavored tobacco products in San Francisco, California. JAMA Pediatrics, 175(8), 863-865. https://doi.org/10.1001/jamapediatrics.2021.0922

Hawkins, S. S., Kruzik, C., O'Brien, M., & Levine Coley, R. (2022). Flavoured tobacco product restrictions in Massachusetts associated with reductions in adolescent cigarette and e-cigarette use. Tobacco Control, 31(4), 576-579. https://doi.org/10.1136/tobaccocontrol-2020-056159

Liu, J., Hartman, L., Tan, A. S. L., & Winickoff, J. P. (2023). Youth tobacco use before and after flavoured tobacco sales restrictions in Oakland, California and San Francisco, California. Tobacco Control, 32(e1), e118-e120. https://doi.org/10.1136/tobaccocontrol-2021-057135

Rogers, T., Brown, E. M., Siegel-Reamer, L., Rahman, B., Feld, A. L., Patel, M., Vallone, D., & Schillo, B. A. (2022). A comprehensive qualitative review of studies evaluating the impact of local US laws restricting the sale of flavored and menthol tobacco products. Nicotine & Tobacco Research, 24(4), 433-443. https://doi.org/10.1093/ntr/ntab188

What the PUBH 4900 Week 4 instructions ask for

Exclusion assignments ask students to state what their capstone will not cover and to justify each boundary. Instructors expect specific exclusions tied to the question, a reason for each and an acknowledgment of what it costs. Many prompts ask students to show that exclusions do not hide unfavorable evidence. Briefs typically cite sources that justify each boundary. Strong briefs restate the approved question so every exclusion can be checked against it. Some sections combine exclusions with inclusion criteria for sources; others treat boundaries separately. Instructors pay close attention to whether a student has excluded material that would weaken the expected answer, since that is the most common way a capstone becomes one-sided.

Inside the PUBH 4900 Week 4 example

The brief restates the question and explains why exclusions need arguing. Five sections each name an exclusion, give its reason and state its cost, citing the original analysis on vaping and the minor population and citing Oakland and Massachusetts studies as context. A section confirms that the original analysis and its robustness checks remain included and that review literature on study quality stays as context. A cost summary closes the brief. Each exclusion is paired with a cost, which keeps the brief from reading as a list of conveniences. The decision to keep Oakland and Massachusetts as context, rather than subjects, lets the capstone acknowledge supportive evidence from other places without letting that evidence answer a question about San Francisco.

Where the marks sit in the PUBH 4900 Week 4 rubric

Exclusion arguments are scored on relevance, justification, candor about cost and fairness. Relevance credit requires exclusions that a reader might expect to see. Justification credit comes from reasons tied to evidence or to the question's wording. Candor credit rewards naming what each exclusion costs. Fairness credit requires showing that excluded material does not include evidence against the student's expected answer. Briefs that cite the original study's own reasons for a boundary, as with vaping here, earn credit for grounding exclusions in the literature. Exclusions that would remove contrary evidence should be named and rejected. Briefs that keep the approved wording visible at the top make every boundary easy to test.

Common PUBH 4900 Week 4 mistakes, and how to avoid them

Exclusion briefs often list what was skipped without saying why. For each boundary, give a reason a skeptical reader would accept. Say what the project loses. Check that you are not excluding the studies that disagree with you. Restate your question at the top so each exclusion can be measured against it. A free exclusion argument for your capstone can be requested. Ask a classmate to read your exclusions and name one thing they expected to see. If you cannot answer why it is excluded in a sentence, either include it or strengthen the reason. Keep the list short; five well-argued boundaries are better than ten thin ones.

Get a PUBH 4900 Week 4 example written to your instructions

Include the Week 4 prompt and rubric along with your question and data note, since the boundaries have to follow from both. A custom exclusion argument returns inside 24-48h, the first free, each boundary argued in the same four moves. Examples reference a stand-in state, so nothing in the argument describes a real place's roads or residents.

More PUBH 4900 papers and BS in Public Health samples

PUBH 4900 Week 4 questions, answered

Where can I find a free PUBH 4900 Week 4 sample paper?

The full Week 4 exclusion argument is shown above, defending five limits the writer set on a study of a citywide flavor ban and teen cigarette use.

Why exclude vaping from a study of a flavor restriction?

The survey did not separate nicotine from cannabis vaping in a year when California legalized recreational cannabis.

Why use other cities only as context?

Judging them on their own merits would turn a focused appraisal into a broad literature review.

What makes an exclusion honest?

It has a stated reason, an acknowledged cost and does not remove evidence that contradicts the expected answer.

Does the capstone judge whether flavor restrictions are good policy?

No; it answers one question about one claim.