Two-phase sampling designs have been used in the ΓΏeld of psychiatry to estimate prevalence and incidence of a rare disease such as dementia and Alzheimer's disease. In a longitudinal study on dementia, since the repeated two-phase sampling is conducted several years after the baseline wave, some sub
Estimation of Heritability for Samples from Non-Normal Situations
β Scribed by Dr. R. A. Singhal; Dr. J. P. Jain
- Publisher
- John Wiley and Sons
- Year
- 1986
- Tongue
- English
- Weight
- 350 KB
- Volume
- 28
- Category
- Article
- ISSN
- 0323-3847
No coin nor oath required. For personal study only.
β¦ Synopsis
Bummary
Mathematical expressions, to irvebtigate the effects cf mcderate departure from ncrmality assumption on the point estimate and an the prcbabilitg of getting a negative estimate of genetic heritability, in a balanced situation, have been derived. The numerical results show thatthepoint estimate is over sensitive whereas t h e probability of a negative cbtimate is inEensitive to this violation.
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Regression equations for estimating living stature from long bone lengths have been calibrated on a sample of European Neolithic skeletons (33 males and 27 females) by using both least-squares (model I) and majoraxis (model 11) regression techniques. Stature estimates of the skeletal sample have bee