Is TW3 height prediction more accurate than TW2? Preliminary data.

Area of Science:

• Pediatric endocrinology
• Human growth and development
• Anthropometry

Background:

• Skeletal maturation is crucial for diagnosing endocrine and chronic diseases, monitoring hormonal therapy, and predicting adult height.
• The Tanner-Whitehouse (TW) methods are standard tools for assessing skeletal maturity and predicting height.
• TW2-Mark II is an updated version of the TW2 method, and TW3 is the latest iteration.

Purpose of the Study:

• To evaluate the accuracy of the Tanner-Whitehouse 3 (TW3) method in predicting adult height compared to the TW2-Mark II method.
• To assess the reliability of height prediction in a sample of healthy North Italian individuals.

Main Methods:

• Utilized anthropometrical data collected from a 1977-1978 survey in Turin, Italy.
• Traced 1,384 healthy children from the original cohort to measure their final adult height.
• Collected final height measurements from 118 adults to test the predictive accuracy of TW2-Mark II and TW3.

Main Results:

• TW3 reduced height prediction errors greater than +/- residual SD in males from 40% (TW2) to 32.9%.
• For females, both TW2 and TW3 showed similar prediction error rates, with 29.2% exceeding +/- residual SD.
• Preliminary analysis indicates marginal improvements with TW3.

Conclusions:

• The TW3 method demonstrates a minor enhancement in height prediction accuracy over TW2-Mark II for males.
• No significant advancement in predictive accuracy was observed for females between the two methods.
• Further research is needed to confirm if TW3 offers substantial progress in skeletal maturation assessment.