Abstract
<h3>To the Editor.—</h3> Using data from metropolitan Atlanta, Adams et al (1981; 246:758) have reported a decrease in the crude incidence of Down's syndrome from 1.33/1,000 births in 1960 to approximately 0.99/1,000 births in 1978. According to the authors, the explanation for this decrease is a reduction in the proportion of births to women aged 35 years or older. They suggest that estimates of resources for future services should be based on these data. We have been able to ascertain all cytogenetically proved cases of Down's syndrome live births in Rhode Island during 1976 to 1980. Since Rhode Island has only two cytogenetic laboratories where blood specimens for chromosomal analysis are routinely sent and one child development center where most children with Down's syndrome are followed up, we are confident that the ascertainment of all live-born children with Down's syndrome is as complete as can be achieved anywhere. Our demographic
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: JAMA: The Journal of the American Medical Association
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
