{"id":1012,"date":"2003-02-01T12:00:00","date_gmt":"2003-02-01T12:00:00","guid":{"rendered":"http:\/\/sltr.local\/?p=1012"},"modified":"2023-09-17T16:51:47","modified_gmt":"2023-09-17T16:51:47","slug":"challenges-in-recruiting-older-twins-for-the-sri-lankan-twin-registry","status":"publish","type":"post","link":"https:\/\/sltr.ird.lk\/ta\/publication\/challenges-in-recruiting-older-twins-for-the-sri-lankan-twin-registry\/","title":{"rendered":"Challenges in Recruiting Older Twins for the Sri Lankan Twin Registry"},"content":{"rendered":"\n<div id=\"publication-container\" class=\"wp-block-uagb-container uagb-block-d92a73d4 alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<div class=\"wp-block-uagb-container uagb-block-8024b029\">\n<p>Athula Sumathipala, Sisira H. Siribaddana, Nihal M. R. Abeysingha, Nimali De Silva, Devaka J. S. Fernando, D. A. R. K. Dayaratne, Deepthi De Silva, Narada D. Warnasuriya &amp; Mathew Hotopf&nbsp;<\/p>\n\n\n<div class=\"publish-date wp-block-post-date\"><time datetime=\"2003-02-01T12:00:00+00:00\">February 2003<\/time><\/div>\n\n<div class=\"taxonomy-category wp-block-post-terms\"><a href=\"https:\/\/sltr.ird.lk\/ta\/category\/publication\/papers\/\" rel=\"tag\">Papers<\/a><span class=\"wp-block-post-terms__separator\">, <\/span><a href=\"https:\/\/sltr.ird.lk\/ta\/category\/publication\/\" rel=\"tag\">Publication<\/a><\/div>\n\n\n<p>Twin Research, Volume 6, Issue 1, Pages 67 \u2013 71<\/p>\n\n\n\n<p>doi:<a rel=\"noreferrer noopener\" href=\"https:\/\/doi.org\/10.1375\/twin.6.1.67\" target=\"_blank\">10.1375\/twin.6.1.67<\/a><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-33811260\">\n<h2 class=\"wp-block-heading has-text-align-left\">Abstract<\/h2>\n\n\n\n<p>The National Twin Registry of Sri Lanka was established in 1997 as a volunteer register. To extend it to a population-based register, we examined the effectiveness of tracing older twins by inspecting birth records and recruiting them by postal invitation and in-person contact. Birth records at a divisional secretariat reported from 2 maternity hospitals between the years of 1954\u20131970 were scrutinised to identify a random sample of twins. These hospitals had the highest twin delivery rates for the whole country. We identified 620 twins and a questionnaire was mailed to them. Research assistants visited a cohort of non-respondents (71) in the postal survey. These 620 twins were identified after perusing 20,700 birth records. <\/p>\n\n\n\n<p>The twinning rate was estimated at 29.95 ([620\/20700] \u00d7 1000) twins per 1000 registered births (CI 27.63\u201332.27). In the postal survey, 37 (12%) responded and 62 letters were returned (20%). Both twins were still alive in 20 pairs, one was still alive in 15 pairs, and both twins were dead in 2 pairs. During field visits, 42 (59.2%) addresses were located. Information was available on 16 twin pairs. Both twins were alive in 8 pairs, one each in 4 pairs, and both were dead in 4 pairs and at least one twin was traced in 10 pairs (14%). Both the postal and the field survey gave a low yield. This finding is different from tracing younger twins born between 1985\u20131997 by using the same methods. Migration, urbanization and development in the country might have affected tracing older twins from the birth record addresses, which were decades old.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-8b71c1c5\">\n<div class=\"wp-block-uagb-container uagb-block-68630121\">\n<div class=\"wp-block-uagb-container uagb-block-5e518491\">\n<p>Website:<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-87ee0c4a\">\n<p><a href=\"https:\/\/www.cambridge.org\/core\/journals\/twin-research-and-human-genetics\/article\/challenges-in-recruiting-older-twins-for-the-sri-lankan-twin-registry\/DEFAE42FAF1C011933D54A3D05CD48B3\">Challenges in Recruiting Older Twins for the Sri Lankan Twin Registry | Twin Research and Human Genetics | Cambridge Core<\/a><\/p>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-0fcdaf73\">\n<div class=\"wp-block-uagb-container uagb-block-aa1e510a\">\n<p>PDF:<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-8d389701\">\n<p><a href=\"https:\/\/www.ird.lk\/wp-content\/uploads\/2015\/03\/Challenges-in-Recruiting-Older-Twins-for-the-Sri-Lankan-Twin-Registry.pdf\">https:\/\/www.ird.lk\/wp-content\/uploads\/2015\/03\/Challenges-in-Recruiting-Older-Twins-for-the-Sri-Lankan-Twin-Registry.pdf<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>The National Twin Registry of Sri Lanka was established in 1997 as a volunteer register. To extend it to a population-based register, we examined the effectiveness of tracing older twins by inspecting birth records and recruiting them by postal invitation and in-person contact. Birth records at a divisional secretariat reported from 2 maternity hospitals between the years of 1954\u20131970 were scrutinised to identify a random sample of twins.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","footnotes":""},"categories":[10,4],"tags":[],"class_list":["post-1012","post","type-post","status-publish","format-standard","hentry","category-papers","category-publication"],"translation":{"provider":"WPGlobus","version":"3.0.0","language":"ta","enabled_languages":["en","si","ta"],"languages":{"en":{"title":true,"content":true,"excerpt":true},"si":{"title":false,"content":false,"excerpt":false},"ta":{"title":false,"content":false,"excerpt":false}}},"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false},"uagb_author_info":{"display_name":"admin","author_link":"https:\/\/sltr.ird.lk\/ta\/author\/admin\/"},"uagb_comment_info":0,"uagb_excerpt":"The National Twin Registry of Sri Lanka was established in 1997 as a volunteer register. To extend it to a population-based register, we examined the effectiveness of tracing older twins by inspecting birth records and recruiting them by postal invitation and in-person contact. Birth records at a divisional secretariat reported from 2 maternity hospitals between&hellip;","_links":{"self":[{"href":"https:\/\/sltr.ird.lk\/ta\/wp-json\/wp\/v2\/posts\/1012","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sltr.ird.lk\/ta\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/sltr.ird.lk\/ta\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/sltr.ird.lk\/ta\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/sltr.ird.lk\/ta\/wp-json\/wp\/v2\/comments?post=1012"}],"version-history":[{"count":3,"href":"https:\/\/sltr.ird.lk\/ta\/wp-json\/wp\/v2\/posts\/1012\/revisions"}],"predecessor-version":[{"id":1603,"href":"https:\/\/sltr.ird.lk\/ta\/wp-json\/wp\/v2\/posts\/1012\/revisions\/1603"}],"wp:attachment":[{"href":"https:\/\/sltr.ird.lk\/ta\/wp-json\/wp\/v2\/media?parent=1012"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sltr.ird.lk\/ta\/wp-json\/wp\/v2\/categories?post=1012"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/sltr.ird.lk\/ta\/wp-json\/wp\/v2\/tags?post=1012"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}