Documents:
Multiples Research Links:
Research Projects:
Twin Birth Study Recruitment
Multiple Birth DVD Project - Focus Group Questions
Selective Reduction Study Recruitment
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Twin Birth Study (TBS) - Recruitment
If you are pregnant with twins, this international research study may be of interest to you.
If you are a healthcare provider for families expecting twins, this international research study may be of interest to you.
This study is funded by the Canadian Institutes of Health Research and co-ordinated at the Maternal, Infant & Reproductive Health Research Unit at The Centre for Research in Women's Health, Toronto, Canada.
If you choose to participate in this study, you will contribute important information that may help future pregnancies similar to yours. The results of the study may influence the practices of physicians and medicine in countries worldwide.
TBS Information for Parents and Families pamphlet (PDF format)
TBS Information for Parents and Families pamphlet (MS Word)
Right click, choose Save Target As and save on your computer under a different name.
TBS Information for Physicians and other Healthcare Providers pamphlet (PDF format)
The Twin Birth Study (TBS) Abstract (PDF format)
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Selective Reduction Study Recruitment
Have you undergone fertility treatment?
Have you undergone in vitro fertilization?
Were you asked to undergo selective reduction?
Are you interested in volunteering to be in a research study about
parents’ experience of IVF and selective reduction?
Parent’s Lived Experience of IVF & Selective Reduction
The purpose of this study is to learn more about the experiences of parents who
have undergone IVF and selective reduction. If you choose to
participate, you will be asked to talk about your experiences with these
procedures. Each conversation will take about 1 to 1 ½ hour. The conversations will take place in your home or in another place that is good for you.
This study should help health care professionals to better understand parents’ experiences of IVF and selective reduction and enable them to give
better care to you and others like you. It is also part of my PhD preparation.
If you would like to hear more about this study please call Jocelyn Dye-Grech at
(780) 492-4755.
Download Information Letter in Word format.
Canadian Multiple Birth Trends
- Approximately 3 percent of Canadian babies arrive in sets of two, three or more, and about 95 percent of these children are twins. In 2002, there were 9,712 multiple-birth babies born in Canada. (Statistics Canada 2004)
- Approximately 41% of multiple-birth children born in Canada live in the province of Ontario. (Statistics Canada 2004)
- On average, more than 26 multiple-birth infants are born each day in Canada. (Statistics Canada 2004; Health Canada 2004)
- Due primarily to assisted reproductive technologies, and an increase in births to older mothers, Canadian multiple births continue to accelerate. Between the years 1993 and 2002 the multiple birth rate increased by 18% while the overall Canadian birth rate dropped 19%. (Statistics Canada 2004; Health Canada 2004)
- In Canada, there are approximately 120,000 multiple-birth children under 13 years of age, and 48,000 multiple-birth children five years of age and under. (Statistics Canada 2004)
- Approximately thirty-five percent of all Canadian multiple births result from infertility treatments (fertility drugs and/or reproductive technologies). (Health Canada 2004; Canadian Fertility & Andrology Society 2004)
- Incidence of multiples without the assistance of infertility treatments is about:
one in 90 births for twins
one in 8,100 births for triplets
one in 729,000 births for quadruplets
one in 65,610,000 births for quintuplets
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