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HEREDITARY DEAF MUTISM, WITH PARTICULAR REFERENCE TO NORTHERN IRELAND

HEREDITARY DEAF MUTISM, WITH PARTICULAR REFERENCE TO NORTHERN IRELAND BY A. C. STEVENSON AND E. A. CHEESEMAN The Department of Social and Preventive Medicine, The Queen’s University 01Belfast INTRODUCTION This paper reports the findmgs of what is believed to be a complete ascertainment in Northern Ireland of deafness sufficient to cause mutism which wm inborn or which begen in the first six years of life. The genetical and clinical problems are discussed, and the mode of inheritance and the population genetics of such deafness are studied. In the text, unless the context makes it clear that the word is used differently, ‘affected’ means ‘believed to be hereditary deaf’. Further, for brevity, ‘ HD ’ refers to persons who were believed to be born deaf, ‘AD’to those whose deafness began after birth from any non-hereditary cause, and ‘ U ’ refers to all other persons. I n the tables ‘ M ’, ‘ F ’ and ‘T ’ indicate ‘ males *, ‘females ’ and ‘total ’ respectively. Where statistical tests of significance have been referred to in the text, the descriptlon of a difference as significant indicates that the observed or greater differences were unlikely to occur by chance more than in 5 yo of ti&. The http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Annals of Human Genetics Wiley

HEREDITARY DEAF MUTISM, WITH PARTICULAR REFERENCE TO NORTHERN IRELAND

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References (33)

Publisher
Wiley
Copyright
Copyright © 1956 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0003-4800
eISSN
1469-1809
DOI
10.1111/j.1469-1809.1956.tb01367.x
Publisher site
See Article on Publisher Site

Abstract

BY A. C. STEVENSON AND E. A. CHEESEMAN The Department of Social and Preventive Medicine, The Queen’s University 01Belfast INTRODUCTION This paper reports the findmgs of what is believed to be a complete ascertainment in Northern Ireland of deafness sufficient to cause mutism which wm inborn or which begen in the first six years of life. The genetical and clinical problems are discussed, and the mode of inheritance and the population genetics of such deafness are studied. In the text, unless the context makes it clear that the word is used differently, ‘affected’ means ‘believed to be hereditary deaf’. Further, for brevity, ‘ HD ’ refers to persons who were believed to be born deaf, ‘AD’to those whose deafness began after birth from any non-hereditary cause, and ‘ U ’ refers to all other persons. I n the tables ‘ M ’, ‘ F ’ and ‘T ’ indicate ‘ males *, ‘females ’ and ‘total ’ respectively. Where statistical tests of significance have been referred to in the text, the descriptlon of a difference as significant indicates that the observed or greater differences were unlikely to occur by chance more than in 5 yo of ti&. The

Journal

Annals of Human Genetics – Wiley

Published: Mar 1, 1956

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