Statistical Analyses of Twins Birth Data from a Nigerian Sample
✍ Scribed by Dr. H. B. Lawal
- Publisher
- John Wiley and Sons
- Year
- 1989
- Tongue
- English
- Weight
- 323 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0323-3847
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✦ Synopsis
In this paper, both the linear logistic model and its analogous linear model (weighted least squares) are fitted to twin birth data from a Nigerian sample. The logits of the observed perinatal mortality rates 81x3 fitted against the birthweight of breech infants for both first born and second born twins. h u l t e show that 8 quadratic response model fits the data very well, and that the WLS procedure gives 8 better fit. The results further show that breech births necessarily result in 7.7 "/o and 11.2 o/o mortality rates respectively for first born and second born twins. The results of a log-linear model analysis on the 2 X2 X 4 contingency table formed by the factors, 'mode of birth', and twins with the response variable 'Apgar Scores'-an index of morbidity-also show that both factors play significant roles in explaining the variation of the response variablc. It was found that the most important factor effecting the ability of a twin infant to survive 88 measured by the Apgar scores is the Variable 'mode of birth' (vertex or breech). I n other words, a vertex first twin infant has the best S l l r v i V 8 l chance.