HI230 Unit 5 Mortality Rate Calculation Example

Reviewed by Chester Goodwin, MBA Quality Assurance and Statistics in Health Information 1 Purdue University Global Free custom sample in 24 to 48h

This HI230 Unit 5 mortality rate calculation sorts a composite hospital's September deaths before computing a gross death rate of 2.40 percent, a net rate of 1.51 percent and a newborn rate of 1.04 percent. Purdue Global HI 230 asks students in the BS in Health Information Management to decide who belongs in each count, and the sort here is explicit: 31 adult and child deaths and one newborn death are inpatient deaths, twelve died within 48 hours of admission, and two fetal deaths and three emergency department deaths are excluded with reasons. Each rate is shown as a definition, as substituted figures and as a result. The set then reads the gap between gross and net as a prompt for case review and explains why crude rates cannot rank one hospital against another.

CourseHI230 Quality Assurance and Statistics in Health Information 1
UnitUnit 5
Paper typeMortality rate calculation
LengthAbout 860 words, 6 pages double-spaced
FormatAPA 7 student paper
SchoolPurdue University Global
ProgramBS in Health Information Management
UpdatedOctober 2026

Free sample paper for HI230 Unit 5

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Thirty-Two Deaths, Twelve of Them Early, and Two That Belong Elsewhere: A Unit 5 Mortality Rate Calculation Sorting a Composite Month's Cases Before Computing the Gross, Net and Newborn Death Rates

[Student Name]

Purdue University Global

HI230: Quality Assurance and Statistics in Health Information 1

Unit 5 Mortality Rate Calculation

[Instructor Name]

[Date]

The hospital, its month and its counts are composite; the formulas and the sources cited are real.

What this part is doingThe case sort comes before any formula because every rate on the page depends on who is in it, and most wrong answers in this unit start with a wrong count rather than wrong arithmetic.
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Who Is in the Count

The source report for September lists every death recorded anywhere in the building. Not all of them are inpatient deaths, and not all inpatient deaths belong in every rate. The sort below follows the standard definitions for hospital statistics (Horton, 2017).

1. Adult and child discharges, including deaths: 1,240.

2. Newborn discharges, including deaths: 96.

3. Adult and child inpatient deaths: 31.

4. Newborn inpatient deaths: 1, an infant born at 34 weeks who died on the fifth day of life.

5. Of the 32 inpatient deaths, those occurring less than 48 hours after admission: 12, all adults.

6. Fetal deaths: 2. Excluded from every inpatient death rate, because a fetus is never admitted as a patient and was not born alive. They are reported in the fetal death rate if the unit asks for one.

7. Deaths in the emergency department before any admission order: 3. Excluded, since these patients were never inpatients.

A patient who dies is still a discharge, so the 32 deaths sit inside the 1,336 total discharges rather than on top of them.

Gross Death Rate

Definition: total inpatient deaths, including newborns, divided by total discharges, including adult, child and newborn deaths, multiplied by 100. Figures: 32 divided by 1,336 equals 0.02395. Result: 2.40 percent. For readers who want adults and children only, the same formula without newborns gives 31 over 1,240, or 2.50 percent. The two figures are close here, because newborn deaths are rare, but the report labels which one it shows.

Net Death Rate

Definition: total inpatient deaths minus deaths under 48 hours, divided by total discharges minus deaths under 48 hours, multiplied by 100. Figures: 32 minus 12 gives 20. 1,336 minus 12 gives 1,324. Then 20 divided by 1,324 equals 0.01511. Result: 1.51 percent. The twelve early deaths come out of the top and the bottom together. Removing them only from the numerator would give 1.50 percent here and a larger error in a smaller hospital. The net rate rests on an old assumption: a hospital has had little time to influence the outcome of a patient who dies within two days of arriving. The assumption is reasonable for some deaths and weak for others, since a patient with sepsis who dies on the second day may have been harmed by a delay in the first six hours. The report gives both rates for that reason.

What this part is doingNaming the assumption behind the net rate shows the grader that the writer can compute the figure and also say what it leaves out.
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Newborns Reported Apart

Definition: newborn inpatient deaths divided by newborn discharges, including deaths, multiplied by 100. Figures: 1 divided by 96 equals 0.01042. Result: 1.04 percent. With one death in 96 discharges, the newborn rate swings widely from month to month. A second death in October would double it. The rate is better read across a year, and the report carries the twelve-month figure beside the monthly one.

What the Gap Suggests

The gross rate of 2.40 percent and the net rate of 1.51 percent differ by almost a full point, which means more than a third of September's deaths, 12 of 32, came within two days of admission. That share is worth a closer look. It may reflect the hospital's role as the receiving center for a wide rural area, with patients arriving late in serious illness, or a rise in transfers from smaller hospitals, or patients admitted for comfort care at the end of life. Each explanation points to a different response, and none of them can be settled from the rates alone. A list of the twelve cases with their admission source and diagnosis would be the next request.

What this part is doingReading the gap between the two rates as a question for case review, rather than a verdict, is the kind of interpretation the unit rewards beyond correct division.
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What Neither Rate Can Do

Neither figure can say whether this hospital is safer or more dangerous than another. Crude death rates move with the age, illness and admission patterns of the patients a hospital serves far more than with the quality of its care. Research on hospital mortality comparisons showed that adjusting for age, diagnosis and the share of emergency admissions explained a large part of the difference between hospitals' crude death rates (Jarman et al., 1999). Even adjusted figures make poor judges of quality, because the share of deaths that better care could have prevented is small, and a standardized ratio cannot separate those deaths from the rest (Lilford & Pronovost, 2010). For an internal report, the gross and net rates are best used to track one hospital against its own past months and to trigger case review when they move, not to rank it.

Results Summary

Gross death rate, September: 2.40 percent (32 deaths, 1,336 discharges). Net death rate: 1.51 percent (20 deaths, 1,324 discharges). Newborn death rate: 1.04 percent (1 death, 96 discharges). Fetal deaths and emergency department deaths are excluded from all three and listed separately.

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References

Horton, L. A. (2017). Calculating and reporting healthcare statistics (5th ed.). AHIMA Press.

Jarman, B., Gault, S., Alves, B., Hider, A., Dolan, S., Cook, A., Hurwitz, B., & Iezzoni, L. I. (1999). Explaining differences in English hospital death rates using routinely collected data. BMJ, 318(7197), 1515-1520. https://doi.org/10.1136/bmj.318.7197.1515

Lilford, R., & Pronovost, P. (2010). Using hospital mortality rates to judge hospital performance: A bad idea that just won't go away. BMJ, 340, Article c2016. https://doi.org/10.1136/bmj.c2016

HI230 Unit 5 instructions, in plain terms

Unit 5 commonly provides a month of discharges and deaths and asks for the gross death rate, the net death rate and often a newborn or postoperative rate. The counts are the hard part. Expect deaths that occurred soon after admission, newborn deaths, fetal deaths and deaths outside the inpatient setting, each of which belongs in some figures and not others. Most prompts ask you to show the formula, substitute the numbers and report results to two decimal places. Many sections also want a short interpretation: what the difference between the gross and net rates suggests, and what the figures cannot tell anyone about quality. Remember that a patient who dies is also a discharge, so deaths sit inside the discharge total. List what you excluded and why before you start dividing.

How the HI 230 Unit 5 example is put together

The calculation starts with a case sort laid out as a numbered list: discharges, newborn discharges, adult and child deaths, the newborn death, deaths under 48 hours, fetal deaths and emergency department deaths, each with its ruling. The gross rate follows in three steps, with an adults-and-children version added for readers who need it. The net rate removes the twelve early deaths from both lines, and a highlighted line shows what removing them from only the numerator would do. A paragraph states the assumption behind the net rate and its weakness. The newborn rate comes next with a warning about small numbers. The interpretation reads the nearly one-point gap, lists three possible explanations, and cites research on why crude and adjusted mortality make poor judges of hospital quality. A summary closes the page.

HI230 Unit 5 rubric: what earns full points

Rubrics for mortality calculations reward correct counts above everything else. The largest share of points goes to the case sort: inpatient deaths only, newborns handled as your text defines, fetal deaths excluded and early deaths flagged. Next come the rates, each with the formula shown, figures substituted and the answer rounded correctly. The net rate earns its points only when the early deaths leave both the numerator and the denominator. Graders also give credit for a separate newborn rate where the prompt asks for one. Interpretation points reward a reading of the gap between gross and net and a plain statement that crude rates reflect patient mix as much as care. A short reference list in APA 7 and a summary line at the end round out the points available in this unit.

Common HI230 Unit 5 mistakes, and how to avoid them

The most common lost points come from counting fetal deaths or emergency department deaths as inpatient deaths. Neither belongs in the inpatient rates. Another frequent error is subtracting the early deaths from the numerator of the net rate and forgetting the denominator. Students also add deaths on top of discharges, when a death is already a discharge, or leave newborn deaths out of a gross rate that the key defines to include them. Check which definition your text uses, since a few differ. Read the gap before you write the interpretation, and avoid claiming the hospital is safe or unsafe from a crude rate. If you have a month of figures to work, send them with your key's definitions and we will lay out the case sort and every rate for you.

Get an HI230 Unit 5 example written to your instructions

Mortality problems hinge on the counts, so pass along the Unit 5 figures exactly as supplied, with the instructions, the rubric and the decimal places your key expects. The custom calculation sorts the cases first and then works each rate in full, returned within 24-48h. A first sample is provided free. Real patient counts from a workplace are not needed. 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.

More HI230 papers and BS in Health Information Management samples

HI230 Unit 5 questions, answered

Why are deaths under forty-eight hours excluded from the net rate?

The convention assumes a hospital has had little chance to affect the outcome of a patient who dies soon after arrival, so the net rate tries to isolate deaths after care had time to act. The assumption is contested, and the example says so in one line, but the calculation still follows the defined formula, removing those deaths from both numerator and denominator.

Do newborn deaths belong in the gross death rate?

In the standard formula, yes: newborn deaths join the numerator and newborn discharges join the denominator. Most keys also ask for a separate newborn death rate, so the example reports both. If your instructions define the gross rate for adults and children only, follow them and note the difference in a sentence, since definitions vary slightly between texts.

Where do fetal deaths go?

Into their own rate, if the unit asks for one, and out of every inpatient death figure. A fetal death is not an inpatient death, because the fetus was never admitted as a patient or born alive. The example lists the two fetal deaths in its case sort precisely so the exclusion is visible to a grader rather than silent.

Where can I find a free HI230 Unit 5 sample paper?

The whole Unit 5 calculation is on this page, from the case sort through the 2.40 percent gross rate, the 1.51 percent net rate and the newborn rate.

How is a net death rate different from a gross death rate?

The gross figure divides every inpatient death by all discharges. The net figure first takes patients who died less than two days after arriving out of the deaths and out of the discharges, then divides.