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Chinese National Weight-for-Stature Growth Chart

Plot your child's weight relative to their standing height using Chinese National Standard growth data. Assesses body proportionality for children measured standing up.

LMS Method: Z = ((X/M)^L - 1) / (L x S)

How It Works

This calculator uses Chinese National Standard growth data to assess weight-for-stature (standing height) in children. Weight-for-stature evaluates whether a child's weight is proportionate to their height, independent of age. This is the standing-height equivalent of weight-for-length. The Chinese standards are derived from large-scale national surveys. The LMS method computes Z-scores and percentiles using height-specific parameters.

Example Problem

A Chinese girl with a standing height of 105 cm weighs 17 kg. What is her weight-for-stature percentile?

  1. Select 'Girl' for gender.
  2. Enter 105 cm for stature.
  3. Enter 17 kg for weight.
  4. The calculator finds the LMS parameters for girls at 105 cm and computes the Z-score.
  5. Result: approximately the 50th percentile on the Chinese national chart, indicating proportionate weight for height.

Key Concepts

Weight-for-stature assesses body proportionality using standing height for older children. Standing height is slightly shorter than recumbent length (0.5-1 cm). Percentiles above the 85th may suggest overweight relative to height. This chart complements weight-for-age and height-for-age by providing a proportionality assessment independent of age. For younger children measured lying down, use the Chinese weight-for-length chart.

Applications

  • Assessing body proportionality in Chinese children
  • Screening for overweight or underweight relative to height
  • Nutritional assessment in Chinese healthcare settings
  • Complementary assessment alongside weight-for-age and stature-for-age
  • Population-specific body proportionality evaluation

Common Mistakes

  • Using recumbent length instead of standing height — this chart requires standing stature
  • Confusing weight-for-stature with weight-for-length (which uses recumbent length)
  • Not verifying that the child's height falls within the chart's range (65-125 cm)
  • Using a single measurement to diagnose overweight or underweight
  • Not accounting for the difference between standing height and recumbent length measurements

Frequently Asked Questions

What stature range does this calculator cover?

This calculator covers standing heights from 65 cm to 125 cm using Chinese national growth standards.

How is this different from weight-for-length?

Weight-for-length uses recumbent length (measured lying down) for younger children. Weight-for-stature uses standing height for older children. Standing height is typically slightly shorter than recumbent length.

What does a high weight-for-stature percentile indicate?

A high weight-for-stature percentile (above the 85th) may suggest the child is overweight relative to their height. However, a single measurement is not diagnostic. Trends over time and clinical context are more important. Consult a pediatrician for proper evaluation.

Reference: Chinese National Standards for Growth and Development of Children. National Health Commission of the People’s Republic of China.

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