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https://ir.swu.ac.th/jspui/handle/123456789/15422| Title: | Birth weight, placental weight and gestation time in relation to natural selection in Thailand |
| Authors: | PROMBOON S. MI M.P. CHATURACHINDA K. |
| Keywords: | birth weight clinical article etiology geographic distribution gestational age heredity human infant natural selection newborn placenta weight survival thailand Biology Birth Weight Body Weight Delivery Of Health Care Demographic Factors Fetal Death Health Health Services Infant Mortality Maternal Health Services Maternal-child Health Services Models, Theoretical Mortality Physiology Population Population Dynamics Pregnancy Pregnancy, Third Trimester Prenatal Care Primary Health Care Reproduction Research Methodology Socioeconomic Factors Southeastern Asia Thailand Time Factors Birth Weight Female Gestational Age Human Infant Mortality Infant, Newborn Male Models, Biological Organ Weight Placenta Pregnancy Selection (Genetics) Sex Factors Support, Non-U.S. Gov't Thailand |
| Issue Date: | 1983 |
| Abstract: | Birth weight, placental weight and gestation time of 26258 single births at Ramathibodi Hospital during 1973–7 were studied in relation to natural selection by fitting quadratic function to natural log of survivors‐to‐nonsurvivors ratios. The survival criterion was 7 days after delivery. The estimated optimal values of birth weight and placental weight were 0.62 and 0.90 standard deviations, respectively, above the corresponding arithmetic means. Selection on birth weight and placental weight was asymmetrical about the optima, being more intense among the lower than the higher values. On the other hand, selection on gestation time seemed most stabilized with the optimum almost coinciding with the mean. Copyright © 1983, Wiley Blackwell. All rights reserved |
| URI: | https://ir.swu.ac.th/jspui/handle/123456789/15422 https://www.scopus.com/inward/record.uri?eid=2-s2.0-0020957661&doi=10.1111%2fj.1469-1809.1983.tb00980.x&partnerID=40&md5=af1df5f865f7fcbac17420a1f29d9376 |
| ISSN: | 34800 |
| Appears in Collections: | Scopus 1983-2021 |
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