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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
Summary
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.