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There is also an app that automatically records the growth curve, so it's a good idea to use it.
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Daily Gendai Healthcare
We will deliver the medical and health articles of the evening paper "Daily Gendai". From everyday health laws to the latest medical information, all articles are based on interviews with doctors and specialists.
Wikipedia related words
If there is no explanation, there is no corresponding item on Wikipedia.
Growth curveWhat is (Seichokusen)?A humanThe degree of physical development ofage, The vertical axis is the data you want to checkGraphExpressed incurveIs.Since it is represented by a curve, the rate of growth is shown.VisualYou can also catch it as a target.小 児 OfheightOften used forFailure to thrive(Low length・) Helps to judge.Of course, growth curves for other data, such asWeight-Body mass index(BMI) ・Sitting heightIt is also possible to create a growth curve such as.
How to draw a reference curve
How to draw the curve that is the standard of the growth curvestandard deviationcurve(SD curve) andPercentile curveThere are two (percentile curves).
- Standard deviation curve
- The data you want to look upnormal distributionA growth curve created by assuming that you are doing.Draw a total of 1 curves, one that plots the average value for each age and the other that corresponds to + 2SD, + 1SD, -2SD, and -5SD. Approximately 2% of people enter between ± 95SD, which is a guideline for medically considering it as a normal range.Since it can be calculated by calculation, it is easy to evaluate each data.However, for data that is not normally distributed (“body weight” is a typical example), there is a drawback that drawing this curve itself becomes statistically meaningless.
- Percentile curve
- Regardless of the distribution of the data you want to examine, a curve created by connecting the points of what percentage of people are below this value.Usually draw 3 lines of 10%, 25%, 50%, 75%, 90%, 97% and 7%.For example, a point on the 25% curve indicates that 25% of people take values below this.Since it is not necessary to follow a normal distribution, it can be drawn for various data, but it has the disadvantage that it cannot be evaluated for extremely high (low) values.
In Japan, the standard deviation curve is often used, but in the world, the percentile curve is often used.
Japan growth curve
For infants and children aged 5 to 17 years oldMinistry of educationHowever, as a school health statistics survey, every year from the 14th day after birth, infants and toddlers before entering elementary schoolMinistry of Health, Labor and WelfareReleases measured value data every 10 years as an infant physical development survey.Measurements for all ages of children will be published once every 10 years, and the latest version is from 1. As of 2010, when evaluating the physique of Japanese children, the standard values calculated based on the data released by both ministries in 2018 are used.
Height is represented by the standard deviation curve, and weight is represented by the percentile curve or SD conversion.
How to determine growth failure
The growth curve can be used to determine failure to thrive in the following two cases.
- The value itself is out of the reference range-the value for a child is out of the -2SD to + 2SD range (or out of the 3-97th percentile)
- Velocity is out of the norm-the velocity of the value for a child crosses the growth curve (for example, +10SD at age 1 but -15SD at age 1)
However, it is not always morbid to deviate from the growth curve, and in some cases, it can be said that it is a constitution rather than a disease.
- Low length Japanese Society for Pediatric Endocrinology-Cross-sectional standard height / weight curve for 0-18 years old (2000 Infant Physical Growth Survey School Health Statistics Survey)