| Course | NS325 Nutrition Through the Life Cycle |
|---|---|
| Unit | Unit 5 |
| Paper type | Growth chart interpretation |
| Length | About 1,130 words, 7 pages double-spaced |
| Format | APA 7 student paper |
| School | Purdue University Global |
| Program | BS in Nutrition Science |
| Updated | October 2026 |
Free sample paper for NS325 Unit 5
A Line That Settles Lower: A Unit 5 Growth Chart Interpretation of a Girl Whose Length Crossed Down and Then Held Steady
[Student Name]
Purdue University Global
NS325: Nutrition Through the Life Cycle
Unit 5 Growth Chart Interpretation
[Instructor Name]
[Date]
The child, her family and every measurement are composite; the CDC growth chart guidance, infant growth study and chart comparison study cited are real.
Methods
Measurements come from the course case: recumbent length and weight at each well-child visit from birth to 24 months, and standing height and weight at 30 months. Visits through 24 months are plotted on the WHO growth standards and the 30-month visit on the CDC charts, following the CDC's recommendation for children in the United States (Grummer-Strawn et al., 2010). Percentiles were read from the published tables. Following the same guidance, the 2.3rd and 97.7th percentiles, two standard deviations from the median, are used as cutoffs on the WHO charts in place of the 5th and 95th.
The Visits
Each line gives age, length or height, its approximate percentile, weight, and the weight-for-length percentile.
1. Birth: 50.4 cm, 75th; 3.6 kg; weight-for-length about 50th.
2. 2 months: 58.4 cm, 75th; 5.4 kg; about 50th.
3. 4 months: 63.0 cm, 65th; 6.6 kg; about 55th.
4. 6 months: 65.7 cm, 50th; 7.3 kg; about 50th.
5. 9 months: 69.6 cm, 40th; 8.0 kg; about 50th.
6. 12 months: 72.8 cm, 25th; 8.6 kg; about 55th.
7. 15 months: 75.9 cm, 20th; 9.2 kg; about 50th.
8. 18 months: 78.6 cm, 15th; 9.7 kg; about 50th.
9. 24 months: 83.2 cm, 15th; 10.8 kg; about 50th.
10. 30 months, standing: 88.0 cm, about 15th on the CDC chart; 12.0 kg; body mass index about 50th.
Her mother is 157 cm tall and her father 170 cm, giving a midparental target height for a girl of about 157 cm, which corresponds to roughly the 15th to 20th percentile for adult women.
Trend Before Snapshot
No single visit is alarming. At 12 months, 72.8 cm at the 25th percentile is well within the normal range; at 18 months, the 15th percentile is too. Only the line shows a change: from the 75th to the 15th percentile over 18 months, a crossing of more than two of the major percentile lines on the chart. Read as a series of snapshots, her chart would never prompt a question. Read as a line, it does.
Length and Weight Together
The relation between the measures is what matters most. When a child is underfed, unwell or not absorbing food, weight tends to drop before length does, often by several months, so weight-for-length drops. Here, weight has fallen in step with length, and weight-for-length has stayed near the 50th percentile at every visit. She is proportionate. A child who is short and thin raises a different question from a child who is shorter than she started but well proportioned.
Because her weight has followed her length down while her weight-for-length has held steady, the pattern looks more like a child moving toward her genetic channel than like a child who is not getting enough food.
Channel Seeking in the First Two Years
A shift in growth channel during infancy is common. In a study of healthy term infants, about two thirds shifted their linear growth percentile during the first two years. Those born long to shorter parents tended to slow down after three to six months and settle into a new, lower channel, usually around the end of the first year or soon after (Smith et al., 1976). Birth length reflects the uterine environment as much as genetics; after birth, growth gradually moves toward the channel set by the parents' heights.
Her pattern fits that description. She was born long, her parents are of below-average height, her length began to slow after four months, and she settled near the 15th percentile, close to her midparental target, by 18 months. She has held that channel for a year since.
The Switch at 24 Months
Two things change at 24 months on her chart. The chart itself changes from the WHO standards to the CDC references, and the measurement changes from length lying down to height standing up. Standing height is usually slightly less than recumbent length in the same child, so a small drop at the switch is expected and should not be read as a slowdown. The two chart systems also classify children differently; one comparison found that prevalence estimates of shortness, underweight and overweight in young US children shifted depending on whether CDC or WHO charts were used (Mei et al., 2008). Her 30-month value is therefore compared with her own earlier channel with caution.
What the Pattern Cannot Mean
The chart cannot rule out every cause. A proportionate slowdown can occasionally reflect a hormonal or genetic condition, or chronic illness that affects length and weight together. The chart alone cannot distinguish these from a normal channel shift; history, examination and, if needed, tests can. Nor can it predict her adult height precisely.
Who Decides
Interpreting the pattern is within a nutrition student's scope; deciding whether it needs investigation is the pediatrician's. Signals that would prompt further evaluation include continued crossing of percentile lines after 24 months, a fall below the 2.3rd percentile, a drop in weight-for-length, or any symptoms of illness. None of these is present.
Talking With the Family
Her parents noticed the change before anyone pointed to the chart; a relative had remarked that she was "smaller than her cousin." Explaining the pattern to them is part of the interpretation. The key points are that she is growing every month, that her weight is in proportion to her length, that babies often move to a new growth line in the first two years, and that her line now sits close to where her parents' heights would predict. The family should also hear what would change that view, such as further crossing or signs of illness, so that reassurance does not sound like dismissal. A printed copy of her chart, with the midparental target marked at the right-hand edge, makes the conversation concrete.
Recommendations
1. Continue routine measurement at well-child visits, using the same technique each time.
2. Plot future points on the CDC chart and watch whether she keeps her channel.
3. Take a brief diet history at the next visit to confirm that intake is adequate, since the chart suggests but does not prove it.
4. Share the midparental target with the family, who have been worried that she is "falling behind."
Limits
These are ten visits recorded by different staff, with no information on measurement technique. Percentiles were read from tables and are approximate. Parental heights were self-reported.
References
Grummer-Strawn, L. M., Reinold, C., & Krebs, N. F. (2010). Use of World Health Organization and CDC growth charts for children aged 0-59 months in the United States. MMWR Recommendations and Reports, 59(RR-9), 1-15.
Mei, Z., Ogden, C. L., Flegal, K. M., & Grummer-Strawn, L. M. (2008). Comparison of the prevalence of shortness, underweight, and overweight among US children aged 0 to 59 months by using the CDC 2000 and the WHO 2006 growth charts. The Journal of Pediatrics, 153(5), 622-628. https://doi.org/10.1016/j.jpeds.2008.05.048
Smith, D. W., Truog, W., Rogers, J. E., Greitzer, L. J., Skinner, A. L., McCann, J. J., & Harvey, M. A. S. (1976). Shifting linear growth during infancy: Illustration of genetic factors in growth from fetal life through infancy. The Journal of Pediatrics, 89(2), 225-230. https://doi.org/10.1016/S0022-3476(76)80453-2
The Purdue Global NS325 Unit 5 instructions
The Unit 5 assignment asks students to interpret a child's growth record using standard charts. Prompts usually provide measurements at several ages and ask for plotting, interpretation and recommendations. Name the charts used at each age and why. Read the pattern over time, not single visits. Compare measures with one another, especially weight relative to length. Consider normal explanations, such as genetic channel shifts, before abnormal ones. Account for the chart switch at 24 months and the change from length to height. State what the chart cannot show. Keep diagnosis with the clinician. Four to five pages is typical. Read percentiles from published tables or reliable software, and say which.
How the NS 325 Unit 5 example is put together
The paper begins with methods, naming the WHO and CDC charts and the cutoffs used. Ten visits are listed with length, weight and percentiles. Parental heights give a midparental target. A section on trend shows that no single visit is alarming, while the line crosses several major percentiles. The relation between length and weight is examined, and the highlighted sentence draws the main inference. An infant growth study supports channel seeking. The switch at 24 months is explained, along with a study comparing the two chart systems. Sections on what the pattern cannot mean, who decides, the family and recommendations follow. Every percentile can be checked against the named chart.
Where the points sit in the NS325 Unit 5 rubric
Growth chart interpretations are usually graded on correct chart use, accurate reading of trends and sound reasoning about causes. Points go to reading the line over time rather than single points. Comparing weight and length, or weight-for-length, shows deeper understanding. Considering normal variants before illness is often credited. Explaining the 24-month chart change is expected. Recommendations should stay within scope. Writing quality and APA style are also assessed. Papers that diagnose a condition from the chart alone usually lose credit. Using the midparental target to frame the pattern is often what lifts a paper. Plotting points accurately on the correct chart is checked closely. Noting that standing height usually reads slightly lower than recumbent length shows careful reading at the switch.
NS325 Unit 5 help from the desk
Growth chart papers often describe each visit separately and miss the trend. Another weakness is reading a percentile drop as failure without checking weight-for-length. Some papers ignore normal channel shifts in the first two years. The 24-month change in chart and measurement is overlooked. Cutoffs are quoted from the wrong chart system. Families are left out, though explaining the chart to them is part of the work. Some papers name a cause the chart cannot show. If you have the measurements but are unsure what the pattern means, compare weight with length at every visit first. A writer can build the interpretation from that comparison. A short, honest section on what the chart cannot show protects the paper from overreaching.
Get an NS325 Unit 5 example written to your instructions
Plots, a data table or only a narrative description: whichever your Unit 5 case supplies, send it as given, with the child's ages at each visit, the instructions and the rubric. The reading gets built on those values and on the chart system your section names. The finished interpretation lands within 24-48h, at no charge for a first custom sample. 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 NS325 papers and BS in Nutrition Science samples
- NS325 Unit 1: Infant Juice Advice Post
- NS325 Unit 2: Vegetarian Prenatal Plan
- NS325 Unit 3: Breastfeeding Myths Memo
- NS325 Unit 4: Infant Room Feeding Guide
- NS325 Unit 6: Seminar Reflection
- NS325 Unit 7: Adolescent Nutrition Brief
- NS325 Unit 8: Older Adult Case Study
- NS325 Unit 9: Meal Plan and Rationale
- NS325 Unit 10: Life Cycle Synthesis Paper
- NS310 Unit 5: B12 Marker Review
- NS305 Unit 5: Roast Turkey HACCP Plan
- NS235 Unit 5: Deficiency Case Study
- NS230 Unit 5: Lipid Metabolism Case Study
NS325 Unit 5 questions, answered
Why do the charts change at two years?
Because the CDC recommends the WHO standards for children under 24 months and its own growth charts from two to nineteen years. The WHO charts describe growth under favorable conditions with breastfeeding as the norm, while the CDC charts describe a reference sample of American children. Papers that mention the difference avoid misreading a jump at the second birthday.
Should the paper use BMI for a child under two?
No. Under 24 months the usual measure of weight relative to size is weight-for-length on the WHO charts, and BMI-for-age begins at two on the CDC charts. From two to nineteen, the CDC categories apply: under the 5th percentile, the 85th to below the 95th, and the 95th and above each carry a label the paper should quote exactly.
How far can the interpretation go toward a cause?
Far enough to list what could explain the pattern and what information would distinguish among the possibilities, and no further. Naming a cause for a real or described child is a clinical judgment. Instructors in this unit tend to reward a paper that ends on a clear referral and a precise description of the trend over one that guesses.
Where can I find a free NS325 Unit 5 sample paper?
This page has a complete Unit 5 growth chart interpretation of a girl whose length crossed down and then held steady, read as a trend with weight-for-length and a midparental target.
Is it normal for a baby to cross percentile lines?
Often, in the first two years. A classic study found about two thirds of healthy infants shifted their length percentile, many settling into a channel closer to their parents' heights.