{"title":"死胎性别比例与出生体重的关系。","authors":"T McKEOWN, C R LOWE","doi":"10.1136/jech.5.4.229","DOIUrl":null,"url":null,"abstract":"(1) There are more male foetuses at risk, for, as indicated by the sex ratio of stillbirths and live births combined (51-5 for England and Wales, 1939-47), there are more males than females in the uterus at 28 weeks, the time from which still births are notified. The male excess at 28 weeks must result from one or both of two causes: (a) a high sex ratio at conception (b) a greater loss of females than of males as abortions in the period between conception and notification.","PeriodicalId":84321,"journal":{"name":"British journal of social medicine","volume":"5 4","pages":"229-35"},"PeriodicalIF":0.0000,"publicationDate":"1951-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1136/jech.5.4.229","citationCount":"2","resultStr":"{\"title\":\"Sex ratio of stillbirths related to birth weight.\",\"authors\":\"T McKEOWN, C R LOWE\",\"doi\":\"10.1136/jech.5.4.229\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"(1) There are more male foetuses at risk, for, as indicated by the sex ratio of stillbirths and live births combined (51-5 for England and Wales, 1939-47), there are more males than females in the uterus at 28 weeks, the time from which still births are notified. The male excess at 28 weeks must result from one or both of two causes: (a) a high sex ratio at conception (b) a greater loss of females than of males as abortions in the period between conception and notification.\",\"PeriodicalId\":84321,\"journal\":{\"name\":\"British journal of social medicine\",\"volume\":\"5 4\",\"pages\":\"229-35\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1951-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1136/jech.5.4.229\",\"citationCount\":\"2\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"British journal of social medicine\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1136/jech.5.4.229\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"British journal of social medicine","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1136/jech.5.4.229","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
(1) There are more male foetuses at risk, for, as indicated by the sex ratio of stillbirths and live births combined (51-5 for England and Wales, 1939-47), there are more males than females in the uterus at 28 weeks, the time from which still births are notified. The male excess at 28 weeks must result from one or both of two causes: (a) a high sex ratio at conception (b) a greater loss of females than of males as abortions in the period between conception and notification.
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