Statistics Canada data indicates that between 2002 and 2006, the late stillbirth incidence (at or beyond 28 weeks gestation) was 3.0/1000 and 4.0/1000 among Canadian and Saskatchewan births respectively. This difference questions the characteristics and associations of late losses in our province; this work aims to assess late Saskatchewan stillbirths in regard to incidence, causes, characteristics, and area-level factors.<p>
Accessing Vital Statistics cases (1987 to 2007, n=1119), descriptive statistics and incidence were examined utilizing Chi-square testing and Poisson regression. Associations between variables were evaluated by log-linear models. Area-level factors relating to incidence within census divisions were explored using Poisson regression.<p>
Although some variation existed by time and region, women were most often less than 35 years, of moderate parity, non-Aboriginal, had no previous stillbirths, and were not carrying multiple fetuses. Approximately half of the losses were preterm and half were inadequately grown. Incidence per 1000 births differed significantly for Saskatchewan (3.86) and Canada (3.43) with only Canada declining. Several division values were also higher than Saskatoons Division 11. Associations were seen between characteristics; most notably the combination of Aboriginality, increased maternal age, and large-for-gestational-age appeared over-represented compared to live births. Regions with higher proportions of Aboriginal preschoolers or land area with herbicide application had higher incidence (RR = 1.53 and 1.55, p-value less than 0.001). Further work is required to understand Saskatchewans lack of decline, what can be done about areas where incidence is increased, the significance of the associated characteristics as actual risk factors, and how Aboriginality and herbicide influence risk at the individual level.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:SSU.etd-04072011-202736 |
| Date | 12 April 2011 |
| Creators | Bryce, Rhonda |
| Contributors | De Padua, Anthony, Mpofu, Debbie, Janzen, Bonnie, Pahwa, Punam |
| Publisher | University of Saskatchewan |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://library.usask.ca/theses/available/etd-04072011-202736/ |
| Rights | unrestricted, I hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to University of Saskatchewan or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report. |
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