Crude, age-specific and infant death rates plus chlamydia incidence, computed for one composite neighborhood with small-number cautions attached, make up this NU450 Unit 3 rate exercise. Searches like "nu 450 unit 3 assignment example", "nu450 unit 3 sample" and "nu450 unit 3 example" land here.
Six Rate Problems for Foundry Row, Where One Infant Death Moves the Rate by Six Points
[Student Name]
Purdue University Global
NU450: Public Health Nursing - Population-Centered Health Care in the Community
Unit 3 Assignment
[Instructor Name]
[Date]
Composite neighborhood data written as a model exercise. All figures are illustrative.
The Table
Mid-year population: 11,800. Residents aged 65 and older: 1,420. Residents aged 15 to 24: 1,690.
Deaths in the year: 128, of which 84 were among residents 65 and older.
Live births in the year: 161; infant deaths: 3.
Live births over five years: 790; infant deaths over five years: 8.
Chlamydia cases in the year: 71, of which 49 were among residents aged 15 to 24. City rate among 15 to 24 year olds: 2,150 per 100,000.
Problem 1: Crude Death Rate
Formula: deaths ÷ mid-year population × 1,000. Substitution: 128 ÷ 11,800 × 1,000. Answer: 10.8 deaths per 1,000 residents per year.
Problem 2: Age-Specific Death Rate, 65 and Older
Formula: deaths aged 65+ ÷ population aged 65+ × 1,000. Substitution: 84 ÷ 1,420 × 1,000. Answer: 59.2 per 1,000 per year.
Problem 3: Infant Mortality Rate, One Year
Formula: infant deaths ÷ live births × 1,000. Substitution: 3 ÷ 161 × 1,000. Answer: 18.6 per 1,000 live births. With two deaths: 2 ÷ 161 × 1,000 = 12.4. With four: 4 ÷ 161 × 1,000 = 24.8. One death more or fewer moves the rate by more than six points, so a single year's figure cannot tell a nurse whether infant health in Foundry Row is getting better or worse.
Problem 4: Infant Mortality Rate, Five Years Pooled
Substitution: 8 ÷ 790 × 1,000. Answer: 10.1 per 1,000 live births. Pooling adds stability, but the rate still rests on fewer than 20 events, and the National Center for Health Statistics treats rates based on fewer than 20 events as unreliable (National Center for Health Statistics, n.d.).
Problem 5: Chlamydia Rate, All Residents
Formula: cases ÷ population × 100,000. Substitution: 71 ÷ 11,800 × 100,000. Answer: 601.7 per 100,000.
Problem 6: Chlamydia Rate, Ages 15 to 24
Substitution: 49 ÷ 1,690 × 100,000. Answer: 2,899.4 per 100,000. Ratio to the city rate: 2,899.4 ÷ 2,150 = 1.35. Caution: a clinic that tests more young people will find more cases, so a higher rate may partly reflect wider testing.
Interpretation for the Neighborhood's Public Health Nurse
Crude death rate: is the neighborhood older than the city? Ask for age-adjusted rates before comparing.
Death rate among older residents: which causes drive it, and how many older residents live alone?
Infant mortality: do not act on one year; review each death individually and watch the five-year figure.
Chlamydia: how much testing happens, and where? Is the higher rate a signal of more infection or of better screening at the health center (Stanhope & Lancaster, 2020)?
References
National Center for Health Statistics. (n.d.). Health, United States: Technical notes. Centers for Disease Control and Prevention.
Stanhope, M., & Lancaster, J. (2020). Public health nursing: Population-centered health care in the community (10th ed.). Elsevier.
How this NU450 Unit 3 example is structured
Problems are arranged so that the neighborhood's size becomes the lesson. The first two are routine and establish the working layout: formula in words, figures substituted, answer with its multiplier and period. Problem 3 then produces the most alarming number in the set, and the working adds a line showing that two deaths would give 12.4 and four would give 24.8, so the reader sees how far a single event moves the rate. Problem 4 pools five years for stability, yet still rests on fewer than 20 events, and the answer cites the National Center for Health Statistics convention that such rates are unreliable. The chlamydia problems compare the young-adult rate with the city's 2,150, a ratio of 1.35, cautioning that wider testing raises counts. The interpretation turns each figure into a question the nurse would ask next.
Get an NU450 Unit 3 example written to your instructions
Rate exercises almost always supply their own table, and the working must use exactly those figures. Once the problems arrive as given, with rounding rules and rubric, every setup is shown and interpreted for a public health nurse. Expect the set in 24-48h; a first one is free. The paper above is an original model document written by our desk, not a submitted student paper and not an official Purdue University Global document.
NU450 Unit 3 questions, answered
Why does the exercise pool five years of infant deaths?
Because a neighborhood produces few events, and one year's rate can swing widely with a single death. Pooling several years of events over several years of births gives a steadier figure, and health departments do this routinely for small areas. The rate still carries a caution when events number fewer than 20, which is the convention the sample cites.
Should small-number rates be left out of an assessment?
Not left out, but reported with care. State the count alongside the rate, say how many years are pooled, and flag rates based on fewer than 20 events as unstable. Leaving them out can hide a real problem in a small community; presenting them without caution can create a false alarm. Your course may name a specific threshold to use.
What if my exercise uses different multipliers?
Use the ones your prompt gives. Infant mortality is conventionally expressed per 1,000 live births and reportable disease incidence per 100,000 residents, which is why the sample uses both, but some exercises standardize everything to one base. Whatever the base, state it with the period in every answer, since a rate without both cannot be compared with anything.