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Risch's lambda values for human obesity

D B Allison1, M S Faith, J S Nathan

  • 1Obesity Research Center, St. Luke's/Roosevelt Hospital, Columbia University College of Physicians & Surgeons, NY, NY, USA.

International Journal of Obesity and Related Metabolic Disorders : Journal of the International Association for the Study of Obesity
|November 1, 1996
PubMed
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This study estimates Risch's lambda (lambda R) for human obesity, a key factor in genetic heritability and sample size calculations for gene mapping studies.

Area of Science:

  • Genetics
  • Obesity Research
  • Biostatistics

Background:

  • Risch's lambda (lambda R) quantifies trait heritability.
  • lambda R is crucial for power analyses in genetic studies.
  • lambda R values for human obesity are currently unavailable.

Purpose of the Study:

  • To calculate estimates of lambda R for human obesity.
  • To provide a resource for researchers conducting gene mapping studies for obesity.
  • To demonstrate the application of lambda R in sample size determination.

Main Methods:

  • Employed both analytic and empirical approaches.
  • Calculated estimates for lambda R specific to human obesity.

Main Results:

Related Experiment Videos

  • Provided calculated estimates of lambda R for human obesity.
  • Presented examples illustrating the use of these estimates.

Conclusions:

  • The study successfully estimated lambda R for human obesity.
  • The findings facilitate more accurate sample size calculations for obesity-related genetic research.