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How accurate is Tanner's formula in estimating target height?

Silvia Ciancia1, Paula Ribes Cajas2, Martine Cools3,4

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Pediatric growth evaluation relies on target height (TH) calculations. Current formulas may inaccurately predict adult height (AH), especially for children with very short parents, impacting growth potential assessments.

Keywords:
GrowthMid-parental heightSecular trendTarget height

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Area of Science:

  • Pediatric Endocrinology
  • Human Growth and Development
  • Genetics and Stature

Background:

  • Growth evaluation is a frequent reason for pediatric endocrinologist referrals.
  • Parental stature is a primary determinant of a child's adult height (AH).
  • Target height (TH) calculation assesses familial growth patterns, but existing formulas face criticism.

Purpose of the Study:

  • To evaluate the accuracy of current target height (TH) calculation methods.
  • To identify factors influencing the discrepancy between predicted and actual adult height (AH).
  • To address the underestimation of growth potential in children of short parents.

Main Methods:

  • Review of existing target height (TH) formulas, including Tanner's 1970 method.
  • Analysis of factors affecting TH accuracy: sex differences, secular trends, parental height disparity, assortative mating, and parent-child height correlations.
  • Assessment of formula performance in predicting adult height (AH) across diverse parental stature ranges.

Main Results:

  • Tanner's formula and similar TH calculations can be inaccurate.
  • The accuracy of TH calculation is influenced by various genetic and environmental factors.
  • Formulas tend to underestimate adult height (AH) in children with very short parents.

Conclusions:

  • Current target height (TH) formulas require refinement for improved pediatric growth assessment.
  • Inaccurate TH predictions can lead to misjudgments in growth potential and therapy effectiveness.
  • Further research is needed to develop more precise methods for predicting adult height (AH).