dc.contributor.author |
Sumathipala, A. |
en_US |
dc.contributor.author |
Sribaddana, S.H. |
en_US |
dc.contributor.author |
Abeysingha, N.M. |
en_US |
dc.contributor.author |
de Silva, N*. |
en_US |
dc.contributor.author |
Fernando, D.J. |
en_US |
dc.contributor.author |
Dayaratne, D.A. |
en_US |
dc.contributor.author |
de Silva, D. |
en_US |
dc.contributor.author |
Warnasuriya, N.D. |
en_US |
dc.contributor.author |
Hotopf, M. |
en_US |
dc.date.accessioned |
2014-10-29T09:22:02Z |
|
dc.date.available |
2014-10-29T09:22:02Z |
|
dc.date.issued |
2003 |
en_US |
dc.identifier.citation |
Twin Research. 2003; 6(1): pp.67-71 |
en_US |
dc.identifier.issn |
1369-0523 (Print) |
en_US |
dc.identifier.uri |
http://repository.kln.ac.lk/handle/123456789/1591 |
|
dc.description |
Indexed in MEDLINE |
|
dc.description.abstract |
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 1954-1970 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 20700 birth records. The twinning rate was estimated at 29.95 ([620/20700] x 1000) twins per 1000 registered births (CI 27.63-32.27). 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 1985-1997 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. |
en_US |
dc.publisher |
Australian Academic Press |
en_US |
dc.subject |
Twins |
|
dc.subject |
Registries |
|
dc.title |
Challenges in recruting older twins for the Sri Lankan twin registry |
en_US |
dc.type |
Article |
en_US |
dc.identifier.department |
Physiology |
en_US |
dc.creator.corporateauthor |
International Society for Twin Studies |
en_US |