Maternal and Other Factors of Cryptorchidism. A Case-control Study in Japan.:A Case-control Study in Japan
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概要
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A case-control study of cryptorchidism was undertaken in Japan. A hundred and eight mothers of children with cryptorchidism and mothers of their matched controls were surveyed. After 4 pairs which consisted of one of twin siblings either in the cases or the controls were excluded, 104 paired data of singletons were analyzed. As a result, a significantly smaller proportion of the case mothers had suffered from vomiting during the index pregnancy than that of the control mothers(odds ratio, or OR=0.50, 95% confidence interval, or CI 0.28-0.89). A significantly larger proportion of the case mothers had delivered the index child by vacuum or breech extraction, or Caesarean section than that of the control mothers(OR=2.09, 95% CI 1.01-3.98). A significantly larger proportion of the case mothers had never breastfed the index child than that of the control mothers(OR=3.50, 95% CI 1.20-10.21). Significantly larger proportions of the cases had inguinal hernia (OR= 9.00, 95% CI 1.29-62.97), or congenital cardiac diseases (OR=8/0, p<0.05) than those of the controls. It was inferred that endogenous hormonal milieu of a mother, rather than exogenous hormones, might be associated with the occurrence of cryptorchidism.
- 久留米大学医学部 The Kurume Medical Journal 編集部の論文
著者
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Mori Mitsuru
Department Of Community Health Science Saga Medical School
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Tsukamoto Taiji
Department Of Urologic Surgery And Andrology Sapporo Medical University School Of Medicine
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Kumamoto Yoshiaki
Department Of Urology Sapporo Medical College
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TSUKAMOTO Taiji
Department of Urology, Sapporo Medical College
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DAVIES THOMAS
Department of Community Medicine, School of Clinical Medicine, University of Cambridge
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FUKUDA KATSUHIRO
Department of Community Medicine, School of Clinical Medicine, University of Cambridge
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MORI MITSURU
Department of Public Health, Kurume University School of Medicine
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KUMAMOTO YOSHIAKI
Department of Community Medicine, School of Clinical Medicine, University of Cambridge
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