Related Experiment Video

Updated: Mar 2, 2026

Quantified Assessment of Infant's Gross Motor Abilities Using a Multisensor Wearable
09:24

Quantified Assessment of Infant's Gross Motor Abilities Using a Multisensor Wearable

Published on: May 17, 2024

2.3K

Monthy growth increments from a longitudinal study of Canadian infants

Alex F Roche1, Shumei Guo1, David L Yeung2

  • 1The Division of Human Biology, Department of Pediatrics, Wright State University, Yellow Springs, Ohio 45387-1695.

American Journal of Human Biology : the Official Journal of the Human Biology Council
|May 18, 2017
PubMed

Insights

New reference data shows infant growth rates in weight, length, and head circumference from 1 to 12 months. These findings help identify deviations in infant growth for Canadian and US populations.

Area of Science:

  • Pediatrics
  • Human Growth and Development
  • Biostatistics

Background:

  • Accurate growth assessment is crucial for monitoring infant health.
  • Existing growth charts may not fully capture the nuances of early infant development.
  • Canadian infants provide a relevant population for establishing growth benchmarks.

Purpose of the Study:

  • To derive reference data for 1-month increments in infant weight, recumbent length, and head circumference.
  • To establish growth rate percentiles for infants aged 1 to 12 months.
  • To provide tools for assessing infant growth trajectories and identifying deviations.

Main Methods:

  • Utilized serial data from 351 full-term Canadian infants.
  • Employed a three-parameter mathematical model to estimate infant measurements at 1-month intervals.
  • Calculated and analyzed 1-month increments, generating percentile distributions.

Main Results:

  • 1-month increments in weight, length, and head circumference decrease with age throughout infancy.
  • Growth increments were generally more rapid in male infants compared to female infants.
  • Reference data presented in tables and figures illustrate these growth patterns.

Conclusions:

  • The derived reference data are suitable for assessing growth rates in term infants in Canada and the United States.
  • These data can aid in the early identification of individual growth deviations.
  • The data facilitate comparisons between different infant population samples.

More Related Videos

Author Spotlight: Implications of Non-Nutritive Sucking on Speech Emergence and Infant Development06:19

Author Spotlight: Implications of Non-Nutritive Sucking on Speech Emergence and Infant Development

Published on: April 19, 2024

1.4K
Breast Milk Enhances Growth of Enteroids: An Ex Vivo Model of Cell Proliferation09:02

Breast Milk Enhances Growth of Enteroids: An Ex Vivo Model of Cell Proliferation

Published on: February 15, 2018

20.0K

Related Concept Videos

Longitudinal Research02:20

Longitudinal Research

Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
13.5K
Population Growth00:57

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.
29.2K
Longitudinal Studies01:26

Longitudinal Studies

Longitudinal studies are also widely used in other medical and social science fields. For instance, in cardiovascular research, they can monitor patients' health over decades to identify risk factors for heart disease, such as high cholesterol or smoking, and evaluate the long-term effectiveness of preventive measures. Similarly, in mental health studies, researchers might follow individuals from adolescence into adulthood to understand the development and progression of conditions like...
584
Introduction to Developmental Psychology01:27

Introduction to Developmental Psychology

Developmental psychology explores the changes and continuities in human abilities throughout life, encompassing physical, cognitive, linguistic, and social dimensions. Human development is not restricted to growth, but includes aspects of decline, particularly in physical abilities as individuals age. Developmental psychologists seek to understand how people change as they age and how their mental and social skills evolve.Developmental MilestonesA key concept in developmental psychology is...
1.9K
Exponential Equations for Modeling Growth02:33

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...
284
Regression Toward the Mean01:52

Regression Toward the Mean

Regression toward the mean (“RTM”) is a phenomenon in which extremely high or low values—for example, and individual’s blood pressure at a particular moment—appear closer to a group’s average upon remeasuring. Although this statistical peculiarity is the result of random error and chance, it has been problematic across various medical, scientific, financial and psychological applications. In particular, RTM, if not taken into account, can interfere when...
7.2K