Related Experiment Video
Updated: May 21, 2026

11:29
Measuring the Functional Abilities of Children Aged 3-6 Years Old with Observational Methods and Computer Tools
Published on: June 20, 2020
Growth curves for school children from Kuching, Sarawak: a methodological development
Yii Bonn Bong1, Asma Ahmad Shariff2, Abdul Majid Mohamed1
1University of Malaya, Kuala Lumpur, Malaysia.
Asia-Pacific Journal of Public Health
|June 2, 2012
Summary
This study presents height and weight reference curves for school children aged 6.5 to 17 in Kuching, Sarawak. Findings reveal distinct growth patterns and ethnic variations in height and weight among students.
Area of Science:
- Pediatric Growth Standards
- Anthropometry
- Public Health
Background:
- Establishing accurate growth references is crucial for monitoring child development.
- Existing growth charts may not accurately represent diverse populations like those in Sarawak.
- Understanding regional variations in child growth is essential for targeted health interventions.
Purpose of the Study:
- To develop and present reference curves for height and weight for school children in Kuching, Sarawak.
- To provide age- and sex-specific percentile data for anthropometric measurements.
- To identify potential differences in growth patterns based on gender and ethnicity.
Main Methods:
- Cross-sectional study involving 3081 school children (6.5–17 years old) in Kuching, Sarawak.
- Collection of anthropometric measurements (height, weight) and demographic data.
- Statistical analysis to generate fitted line plots and percentiles (3rd to 97th).
Main Results:
- Reference curves for height and weight were established for boys and girls aged 6.5–17 years.
- Boys showed continued height and weight increases into adolescence, while girls' growth stabilized around 16–17 years.
- Significant height differences emerged during adolescence, with boys becoming taller than girls.
- Chinese school children exhibited greater height and weight compared to other ethnic groups.
Conclusions:
- The study provides valuable, localized growth reference curves for Kuching school children.
- Findings highlight sex-specific growth trajectories and ethnic variations impacting child development in the region.
- These references can aid in the early detection of growth abnormalities and inform public health strategies.
Related Concept Videos
Population Growth
Population size is dynamic, increasing with birth rates and immigration, and decreasing with death rates and emigration. In ideal conditions with unlimited resources, populations can increase exponentially, which plots as a J-shaped growth rate curve of population size against time. This type of curve is characteristic of newly-introduced invasive species, or populations that have suffered catastrophic declines and are rebounding.
Survival Curves
Survival curves are graphical representations that depict the survival experience of a population over time, offering an intuitive way to track the proportion of individuals who remain event-free at each time point. These curves are widely used in fields such as medicine, public health, and reliability engineering to visualize and compare survival probabilities across different groups or conditions.
The Kaplan-Meier estimator is the most common method for constructing survival curves. This...
The Kaplan-Meier estimator is the most common method for constructing survival curves. This...
Variation: Normal Distribution, Range, and Standard Deviation
In the field of psychology, there are several ways to organize measurements of a trait, feature, or characteristic (i.e., variables). Qualitative data, such as ethnicity, can be tabulated into a frequency count to provide information about the proportion, as well as the variety of groups in a sample or population. On the other hand, researchers can perform a wider set of calculations on quantitative data. The mean, mode, and median, for instance, are central tendency measures to identify a...
Modeling with Differential Equations
Population dynamics can be described mathematically by considering the population size P(t) as a function of time. The rate of change of the population is then represented by the derivative of P(t). A simple assumption is that the rate of growth is proportional to the size of the population itself. This leads to an exponential growth model, where the population increases rapidly without bound. While this is a useful first approximation, it does not reflect realistic long-term...
Exponential Equations for Modeling Growth
Exponential models are essential for describing rapid, multiplicative changes in natural systems, such as population growth. When a population doubles at regular intervals, the process can be modeled using a suitable base. For instance, a bacterial culture that doubles every three hours follows the model n(t)=n0⋅2t/3, where n(t) is the population at the time t.A more general model uses the natural base e, especially for continuous growth. This takes the form n(t)=n0⋅ert, where r is the relative...
Life Histories
Overview

