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Reliability of infant length measurement

I J Doull1, E S McCaughey, B J Bailey

  • 1Department of Child Health, Southampton General Hospital.

Archives of Disease in Childhood
|June 1, 1995
PubMed

Insights

Reliable length measurements are possible in infants under 1 year old. Standard deviations were comparable to those in older children, indicating no technical barriers to accurate infant anthropometry.

Area of Science:

  • Pediatrics
  • Anthropometry
  • Biomedical Engineering

Background:

  • Accurate anthropometric measurements are crucial for monitoring infant growth and development.
  • Previous studies have established reliable methods for height measurement in older children.
  • Data on the reliability of length measurement in infants under one year is less established.

Purpose of the Study:

  • To assess the reliability of length measurement in infants less than 1 year of age.
  • To determine the standard deviation (SD) of single length measurements at different infant ages.
  • To compare infant length measurement reliability with existing data for older children.

Main Methods:

  • Involved 38 infants under 1 year of age.
  • Length measurements were taken to determine the standard deviation (SD) of a single measurement.
  • Data was collected at birth, 6 weeks, and 8 months of age.

Main Results:

  • The SD of a single length measurement was 0.28 cm at birth.
  • The SD was 0.42 cm at both 6 weeks and 8 months of age.
  • These values are comparable to the SD of single height measurements in older children.

Conclusions:

  • Reliable length measurement is technically feasible in infants under 1 year of age.
  • The reliability of infant length measurement is comparable to that of height measurement in older children.
  • There are no technical impediments to obtaining accurate length measurements in young infants.

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