Trends in Anthropometric Measures Among US Children 6 to 23 Months, 1976-2014

Lara J Akinbami1,2, Brian K Kit3,2, Margaret D Carroll3

  • 1National Center for Health Statistics, Centers for Disease Control and Prevention, Hyattsville, Maryland; and lea8@cdc.gov.

Pediatrics
|February 19, 2017
PubMed

Insights

Childhood growth surveillance shows stable weight-for-age and weight-for-length trends but a decrease in high length-for-age. Non-Hispanic black children experienced increased weight gain over time.

Area of Science:

  • Pediatric Nutrition
  • Public Health Surveillance
  • Growth Monitoring

Background:

  • Children's growth surveillance is crucial for assessing population nutritional status.
  • It helps identify risks for adverse health outcomes in early childhood.

Purpose of the Study:

  • To analyze trends in length-for-age, weight-for-age, and weight-for-length.
  • To describe patterns of early childhood weight gain in US children aged 6-23 months.

Main Methods:

  • Utilized data from the National Health and Nutrition Examination Survey (NHANES) spanning multiple periods from 1976-2014.
  • Calculated z-scores relative to World Health Organization growth standards to identify low (< -2) and high (≥ +2) indicators.
  • Estimated relative weight gain from birth to survey participation, analyzing trends by race/Hispanic origin.

Main Results:

  • Prevalence of low/high length-for-age, weight-for-age, and weight-for-length in 2011-2014 reported.
  • A significant decrease in high length-for-age was observed from 1976-1980 to 2011-2014 (5.5% to 3.7%).
  • No significant overall trends in weight-for-age or weight-for-length were found; however, non-Hispanic black children showed increased weight gain over time.

Conclusions:

  • No significant trends in low or high weight-for-age and weight-for-length were identified in children aged 6-23 months between 1976-1980 and 2011-2014.
  • The percentage of children with high length-for-age decreased significantly during this period.
  • A notable trend of increased relative weight gain was observed specifically among non-Hispanic black children.
Abstract

Related Concept Videos

Nature and Nurture01:10

Nature and Nurture

Many human characteristics, like height, are shaped by both nature—in other words, by our genes—and by nurture, or our environment. For example, chronic stress during childhood inhibits the production of growth hormones and consequently reduces bone growth and height. Scientists estimate that 70-90% of variation in height is due to genetic differences among individuals, and 10-30% of variation in height is due to differences in the environments that individuals experience,...
22.6K
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...
7.3K
Signs of Puberty01:27

Signs of Puberty

Puberty is a critical phase, typically beginning between the ages of 8 and 13 in girls and 9 and 14 in boys, though timing can vary based on genetics, environmental factors, and overall health. This period is characterized by the development of secondary sexual characteristics and the attainment of reproductive potential. Endocrine changes underpin puberty, with hormonal surges of Luteinizing Hormone (LH) and Follicle-Stimulating Hormone (FSH) instigated by Gonadotropin-Releasing Hormone (GnRH)...
1.8K
Variation: Normal Distribution, Range, and Standard Deviation02:32

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...
29.7K
Central Tendency: Analysis01:10

Central Tendency: Analysis

Measures of central tendency are tools used in biostatistics to identify the average or center of a dataset. They offer a single representative value for understanding and summarizing data distribution.
The mean is one such measure, calculated by totaling all values in a dataset and dividing by the number of values. For instance, the mean blood pressure reading (120, 130, 140, 150) would be 135. However, the mean can be affected by extreme values or outliers.
The median, another measure,...
595
Pharmacokinetics in Pediatric Patients: Drug Metabolism01:24

Pharmacokinetics in Pediatric Patients: Drug Metabolism

In pediatric care, understanding the nuances of hepatic drug metabolism is crucial, as it significantly differs from that of adults. This divergence is primarily due to the developmental stage of drug-metabolizing enzymes, which affects how medications are processed in the body. In neonates, for instance, the activity of Phase I enzymes—critical for the initial breakdown of drugs—is markedly reduced, functioning at just 20–40% of the levels seen in adults. This reduction poses...
304