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Dissertations / Theses on the topic 'Risk Factors and Sheep'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Oliveira, Catarina Filipa da Silva. "Prevalência e fatores de risco associados à infeção por Fasciola hepatica em ovinos das raças Merina Branca e Merina Preta." Master's thesis, Universidade de Évora, 2022. http://hdl.handle.net/10174/31220.

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A fasciolose, causada por Fasciola hepatica, um trematode zoonótico globalmente distribuído, é uma parasitose hepática responsável por importantes perdas económicos na produção ovina. O estudo teve por objetivo determinar a prevalência e possíveis fatores de risco associados à infeção por F. hepatica em ovinos das raças Merina Branca e Merina Preta da região do Alentejo. Para tal, foram analisadas amostras de fezes e sangue colhidas de 423 ovinos da raça Merina Branca e 252 ovinos da raça Merina Preta provenientes de 28 explorações. O exame coprológico, pelo método de sedimentação natural modi

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Rosa, Luciana Dalla. "Prevalência e fatores de risco para infecção por neospora caninum em ovinos no município de Lages, Santa Catarina, Brasil." Universidade do Estado de Santa Catarina, 2010. http://tede.udesc.br/handle/handle/827.

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Made available in DSpace on 2016-12-08T16:24:07Z (GMT). No. of bitstreams: 1 PGCA10MA057.pdf: 284934 bytes, checksum: 412cd7a894dff7250bef856cd5965d43 (MD5) Previous issue date: 2010-07-09<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The neosporosis is a disease caused by protozoan Neospora caninum. Dogs, coyotes and dingos are definitive hosts and among livestock, the sheep is one of the intermediate host, wich may have mainly reproductive problems, and hence siginificant economic losses. Aiming to determine the prevalence of onfection by N. caninum in sheep in the city

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3

Wolf, Annika [Verfasser], Martin [Akademischer Betreuer] Ganter, Benjamin [Akademischer Betreuer] Bauer, and Martin [Gutachter] Runge. "Prevalence and risk factors of Coxiella burnetii in German sheep flocks and evaluation of a novel approach to detect an infection via preputial swabs at herd-level / Annika Wolf ; Gutachter: Martin Runge ; Martin Ganter, Benjamin Bauer." Hannover : Stiftung Tierärztliche Hochschule Hannover, 2021. http://d-nb.info/123768501X/34.

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4

Tillberg, Anders. "A multidisciplinary risk assessment of dental restorative materials." Doctoral thesis, Umeå : Univ, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1860.

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5

Sakata, Francine Bragagnolo Liz Stefen. "Prevalência e fatores de risco para toxoplasma gondii em ovinos no município de Lages, Santa Catarina, Brasil." Universidade do Estado de Santa Catarina, 2010. http://tede.udesc.br/handle/handle/860.

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Made available in DSpace on 2016-12-08T16:24:11Z (GMT). No. of bitstreams: 1 PGCA10MA077.pdf: 251261 bytes, checksum: 659afb14e9609405d069749d1029eb68 (MD5) Previous issue date: 2010-08-09<br>This study evaluated the prevalence of antibodies against Toxoplasma gondii in sheeps in the municipality of Lages, in the state of Santa Catarina, Brazil, and identified possible risk factors for infection. Blood samples of 360 animals from 13 properties were collected by puncturing of the jugular vein, stored in sterile tubes and carried to the Laboratory of Parasitology and Parasitic Diseases CAV / U

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6

Ashworth, C. J. "Maternal factors affecting early pregnancy in sheep." Thesis, University of Edinburgh, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.354107.

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7

Santiago, Mia B. "Risk Factors." The Ohio State University, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=osu1619120045259618.

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8

McGeown, James Graham. "Mechanical factors affecting lymph flow in the sheep." Thesis, Queen's University Belfast, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317129.

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9

Antuna, Aurelio M. "Factors affecting the intake of herbage by sheep." Thesis, Aberystwyth University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.322672.

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10

Simoes, Jose Pedro Cannas. "Some Factors Affecting the Postpartum Interval in Sheep." DigitalCommons@USU, 1989. https://digitalcommons.usu.edu/etd/4105.

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The effect of genotype on the occurrence of ovulation and estrus during the interval from lambing to ovulation accompanied by estrus (postpartum interval) was measured in White-Face and Black-Face ewes that lambed during the breeding season in 1986 and 1987. A group of St. Croix ewes was added to the study in 1987. The influence of lactation on the events of the postpartum interval was measured by comparing intact and mastectomized White-Face and Black-Face ewes. The effect of prolactin on postpartum interval was measured in these two genotypes and in a group of bromocriptine-treated Black-Fac

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11

Hackett, Scott Leigh. "Factors affecting formulation and efficacy of a sheep ectoparasiticide." Thesis, The University of Sydney, 2015. http://hdl.handle.net/2123/14328.

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This research thesis, FACTORS AFFECTING FORMULATION AND EFFICACY OF A SHEEP ECTOPARASITICIDE used six experimental formulations containing a range of excipients and a novel ectoparasiticide, AHC-2013. The project was conducted at Yarrandoo R&D Centre, Novartis Animal Health Australasia Pty Limited (NAH), Kemps Creek, Australia. The project utilized resources and personnel approved by NAH management, e.g. animals, animal facilities, scientific analytical equipment and technical support. Three in vivo studies in sheep were conducted to investigate efficacy, drug migration in the fleece and aroun

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12

Grobler, Hermanus Johannes Fourie. "Veldram performance testing of dorper rams in Namibia : performance testing, progency testing and factors influencing sale price of rams." Thesis, Nelson Mandela Metropolitan University, 2010. http://hdl.handle.net/10948/1545.

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The study aims to determine the contribution made by available ram growth- and breed standard parameters on the sale price of auctioned rams in Namibia. These findings serve as an indication of the importance ram buyers place on individual parameters in selecting rams for breeding purposes. It furthermore tries to establish whether scientific measurement for the estimation of ram breeding values takes precedence over subjective appraisal. The analysis of the 100 day and 270 day growth performance of the progeny of selected Veldram tested rams were used to evaluate the accuracy of the estimatio

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13

Boland, Rochelle Elizabeth 1974. "Factors affecting structural development of the lung in fetal sheep." Monash University, Dept. of Physiology, 2002. http://arrow.monash.edu.au/hdl/1959.1/8135.

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14

Hawkins, Darren Phillip. "Environmental factors affecting the development of scrapie in Icelandic sheep." Thesis, University of Bristol, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.430166.

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15

Cooper, Susan Dianna Barbour. "Plant and animal factors affecting the diet selection of sheep." Thesis, University of Edinburgh, 1995. http://hdl.handle.net/1842/14720.

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The purpose of this work was to test the ability of sheep to select between foods of different energy density (ED; MJ ME/kg food) a diet which meets their physiological needs, in a series of five experiments. Experiment 1 used pregnant and contemporary non pregnant ewes to test the hypothesis that sheep can select a diet which meets their needs for energy and protein. Four foods were offered: foods A and B were of high ED and foods C and D were of low ED; foods A and C were of high crude protein (CP) concentration, foods B and D were of low CP concentration. The treatments included paired choi

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16

Currie, Ian Stewart. "Regulation of corticotrophin-releasing factors in the fetal sheep hypothalamus." Thesis, University of Edinburgh, 1992. http://hdl.handle.net/1842/19665.

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In many species a developmentally related increase in cortisol production from the fetal adrenal gland brings about the progressive maturation of fetal organ systems and triggers the onset of parturition. The fetal hypothalamus is thought to play a pivotal role in this process by secreting the neuropeptides, CRH and AVP which act upon the fetal pituitary gland to cause the secretion of ACTH. However, little is known about the ontogeny and neuroendocrine regulation of CRH and AVP secretion from the fetal hypothalamus. The experiments described in this thesis were therefore designed to investiga

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17

Kind, Karen Lee. "Insulin-like growth factors and growth of the fetal sheep /." Title page, contents and abstract only, 1995. http://web4.library.adelaide.edu.au/theses/09PH/09phk525.pdf.

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18

Bell, Tanya Ann. "Risk factors for endometriosis /." [St. Lucia, Qld.], 2006. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe19349.pdf.

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19

Greenfield, Diana. "Risk factors for fracture." Thesis, University of Sheffield, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.301599.

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20

Westerdahl, Johan. "Malignant melanoma risk factors /." Lund : Dept. of Surgery, Lund University, 1995. http://catalog.hathitrust.org/api/volumes/oclc/39204671.html.

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21

Euro, U. (Ulla). "Risk factors for sciatica." Doctoral thesis, Oulun yliopisto, 2019. http://urn.fi/urn:isbn:9789526222912.

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Abstract Sciatica is a common musculoskeletal disorder, especially among the working-age population. It causes huge costs to society through work absenteeism and hospital treatments. The common cause of sciatica is the herniated lumbar disc compressing the nerve root. The neurological deficit resulting from this compression can be either sensory or motor-related. Earlier studies have shown both genetic and environmental factors to exist in the aetiology of sciatica. The aim of this study was to investigate how individual, physical and work-related risk factors associate with sciatica, and to d

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22

Singh-Knights, Doolarie. "An analysis of the management decisions of sheep producers in West Virginia." Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1542.

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Thesis (M.S.)--West Virginia University, 2000.<br>Title from document title page. Document formatted into pages; contains vi, 90 p. : ill. Vita. Includes abstract. Includes bibliographical references (p. 71-76).

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23

Damir, H. Abu. "Factors affecting bone mineralization and matrix turnover in sheep and cattle." Thesis, University of Aberdeen, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306863.

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1. A series of experiments were carried out to look at the effects of a change in blood acid-base status on calcium and phosphorus metabolism in growing lambs and in the near term pregnant dairy cow. 2. In the first experiment three groups of lambs about 25 kg live weight were fed a basal diet either on its own or supplemented with 10 g/kg ammonium chloride (acid diet) or 20 g/kg sodium bicarbonate (alkaline diet). At about 45 kg live weight the lambs were killed and their body composition was determined. The composition of their gains was also determined using data obtained from a further gro

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24

Stanton, James Brantly. "Identifying factors that enhance prion accumulation in cultured sheep microglial cells." Pullman, Wash. : Washington State University, 2008. http://www.dissertations.wsu.edu/Dissertations/Fall2008/j_stanton_082908.pdf.

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25

Sherwin, C. M. "Shading behaviour in sheep: The influence of social and thermal factors." Thesis, Sherwin, C.M. (1987) Shading behaviour in sheep: The influence of social and thermal factors. PhD thesis, Murdoch University, 1987. https://researchrepository.murdoch.edu.au/id/eprint/53285/.

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Most homeotherms are believed to avoid large deviations of deep body temperature by choosing thermally preferable environments. There is evidence to suggest that this is not always true. Johnson (1987) found in two flocks of sheep that some individuals repeatedly spent time in the sun while others shaded. The animals voluntarily exposing themselves to high levels of solar radiation behaved in a fashion apparently contrary to accepted principles of homeostasis. This thesis describes investigations of the differences in shading behaviour amongst sheep and any consequences of these for their ther

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26

Parkin, Lianne, and n/a. "Risk factors for venous thromboembolism." University of Otago. Dunedin School of Medicine, 2008. http://adt.otago.ac.nz./public/adt-NZDU20080513.145314.

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Background: Many risk factors for venous thromboembolism have been identified, but two particular exposures - the use of combined oral contraceptives and long-distance air travel - have generated considerable concern in recent years. In contrast, a possible link between venous thromboembolism and a third exposure - the use of psychotropic drugs - was first raised in the 1950s, but has received surprisingly little attention. Information about all three exposures and the risk of fatal events is limited. These risks were examined in three inter-related national population-based studies. Methods

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27

McKinney, Christy Michelle. "Identifying risk factors for plagiocephaly /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/10957.

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28

Hurtig, Wennlöf Anita. "Cardiovascular risk factors in children /." Stockholm, 2005. http://diss.kib.ki.se/2005/91-7140-179-2/.

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29

Goodwin, Huw. "Risk factors for compulsive exercise." Thesis, Loughborough University, 2010. https://dspace.lboro.ac.uk/2134/7099.

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Background: The highly driven and often excessive exercise seen in eating disorder patients can be defined as a compulsive behaviour, and is often performed for weight control reasons, as well as for mood regulatory purposes. Compulsive exercisers often exercise in a rigid and rule-driven manner and predominantly report no enjoyment from the activity. Importantly, compulsive exercise has negative clinical implications, such as prolonging eating disorder treatment and representing a key factor in eating disorder relapse. However, despite these negative clinical implications and the large percen

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30

Rusnak, I. T. "Cardiovascular risk factors. Physical activity." Thesis, БДМУ, 2022. http://dspace.bsmu.edu.ua:8080/xmlui/handle/123456789/19579.

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31

Cornett, Patricia F. "Risk Factors for Vascular Dementia." Thesis, University of North Texas, 2005. https://digital.library.unt.edu/ark:/67531/metadc4781/.

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Dementia is a devastating disorder that commonly affects people over the age of 65. Alzheimer's disease and vascular dementia are the most common forms of dementias. A number of studies have implicated cardiovascular risks as important factors in the development of dementia. These risks include high-risk behaviors such as smoking and risks related at least partially to health behaviors such as diet and exercise. This study examines a group of cardiovascular risk factors, as defined by the Framingham study, to ascertain if they are predictors of dementia. A retrospective chart review of 481cons

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32

Norris, Richard Thomas. "Studies of factors affecting sheep deaths during lot-feeding and sea transport." Thesis, Norris, Richard Thomas (1991) Studies of factors affecting sheep deaths during lot-feeding and sea transport. PhD thesis, Murdoch University, 1991. https://researchrepository.murdoch.edu.au/id/eprint/53373/.

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The export of live sheep from Australia is an important industry. However, deaths during sea transport are not only costly but also raise concerns about animal welfare. This thesis records studies conducted as a part of a large multi-disciplinary investigation in Western Australia to reduce mortality and improve the welfare of export sheep. Records of deaths aboard ships were analysed to determine death rates and predisposing factors. The annual death rate was approximately 2%, with almost 80% of deaths occurring before arrival at the first port. Several factors were associated with mortali

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33

Rajaratne, A. A. J. "Factors affecting the absorption and retention of the major inorganic elements in sheep." Thesis, University of Aberdeen, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.234305.

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A series of experiments was carried out to study the factors affecting faecal endogenous P excretion in sheep. Experiments 3.1, 3.2 and 3.3 involved intensive balance measurements and radio-isotope (<SUP>32</SUP>P) dilution measurements made on 6 mature sheep, to study the effect of changing salivary secretion on P metabolism. A hay diet (P intake 2.2 g/d) was fed in 3 different physical forms (finely ground, coarsely ground and chopped) in experiment 3.1 and a low-P oat husk based diet was given in coarse or finely ground form in experiment 3.2. The results of both the experiments indicated t

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34

Antay, Bedregal David, Revello Evelyn Camargo, and German F. Alvarado. "Associated factors vs risk factors in cross-sectional studies." Dove Medical Press, 2016. http://hdl.handle.net/10757/594907.

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35

Gentry, Paula C. "Stem cell factor and c-kit in the ovine ovary /." free to MU campus, to others for purchase, 1996. http://wwwlib.umi.com/cr/mo/fullcit?p9713220.

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36

Koçman, Metin. "Do modern people dream of organic sheep? : A review of the Risk Society thesis." Thesis, Stockholms universitet, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-52314.

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Some sociologists think that contemporary society calls for new ways of analyzing it, and Ulrich Beck is arguably one of them. Suggesting that some classic sociological variables such as class are losing their relevancy, Beck advances a theory based on the concept of “reflexive” modernity – modern society cutting the ground from under itself and ending up as something new – advanced modernity. This paper is investigating the theoretical background to this claim, and also reviews some of the critique leveled at Beck. Unsurprisingly Beck's suggestion that class is dissolving has been criticized,

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37

Jacobson, Caroline. "Scouring and dag in sheep in Western Australia: the role of parasitic nematodes and nutritional factors in diarrhoea in sheep of post-weaning age." Thesis, Jacobson, Caroline ORCID: 0000-0001-9427-1941 (2006) Scouring and dag in sheep in Western Australia: the role of parasitic nematodes and nutritional factors in diarrhoea in sheep of post-weaning age. PhD thesis, Murdoch University, 2006. https://researchrepository.murdoch.edu.au/id/eprint/700/.

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Diarrhoea ("scouring") in sheep increases the risk of faecal soiling of the breech ("dag") that in turn causes significant production losses for sheep producers and increases susceptibility of sheep to breech blowfly strike. The common causes of scouring in sheep of post-weaning age in Western Australia have not been well described. In a written questionnaire sent to sheep producers in the south west of Western Australia, about half of the respondents reported lamb, hogget and ewe flocks with moderate or severe dag. Flocks with moderate or severe dag were reported more commonly in the wint

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38

Jacobson, Caroline. "Scouring and dag in sheep in Western Australia : the role of parasitic nematodes and nutritional factors in diarrhoea in sheep of post-weaning age /." Jacobson, Caroline (2006) Scouring and dag in sheep in Western Australia: the role of parasitic nematodes and nutritional factors in diarrhoea in sheep of post-weaning age. PhD thesis, Murdoch University, 2006. http://researchrepository.murdoch.edu.au/700/.

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Diarrhoea ("scouring") in sheep increases the risk of faecal soiling of the breech ("dag") that in turn causes significant production losses for sheep producers and increases susceptibility of sheep to breech blowfly strike. The common causes of scouring in sheep of post-weaning age in Western Australia have not been well described. In a written questionnaire sent to sheep producers in the south west of Western Australia, about half of the respondents reported lamb, hogget and ewe flocks with moderate or severe dag. Flocks with moderate or severe dag were reported more commonly in the winte

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39

March, Alice L. "Adolescent sexual debut, risk factors, protective factors, and health risk behaviors rural, suburban, and urban differences /." Diss., Online access via UMI:, 2006.

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40

Schultz, Stephen T. "Environmental Risk Factors for Autistic Disorder." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2006. http://wwwlib.umi.com/cr/ucsd/fullcit?p3212023.

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Thesis (Ph. D.)--University of California, San Diego and San Diego State University, 2006.<br>Title from first page of PDF file (viewed July 10, 2006). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references.

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41

Pino, Lilia Diaz. "Risk Factors and Suspected Child Maltreatment." Scholarly Repository, 2010. http://scholarlyrepository.miami.edu/oa_dissertations/492.

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Maltreatment affected an estimated 794,000 children in the 50 States, the District of Columbia, and Puerto Rico in 2007 (United States Department of Health and Human Services [USDHHS], 2009). The purpose of this study was to examine the risk factors of young maternal age, parents' marital status, multiple birth, preterm birth, birth defects/disability, low economic status, and parental substance abuse related to suspected maltreatment of children 3 years of age or younger from the prospective of pediatric nurse practitioners (PNPs). A cross-sectional survey design, using the Tailored Design M

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42

Viale, Ariel Marcelo. "Common risk factors in bank stocks." Texas A&M University, 2003. http://hdl.handle.net/1969.1/5806.

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This dissertation provides evidence on the risk factors that are priced in bank equities. Alternative empirical models with precedent in the nonfinancial asset pricing literature are tested, including the single-factor Capital Asset Pricing Model (CAPM), three-factor Fama-French model, and Intertemporal Capital Asset Pricing Model (ICAPM). The empirical results indicate that an unconditional two-factor Intertemporal Capital Asset Pricing Model (ICAPM) model, that includes the stock market excess return and shocks to the slope of the yield curve, is useful in explaining the cross-section of ban

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43

Garner, Michael J. "Dietary risk factors for testicular cancer." Thesis, University of Ottawa (Canada), 2003. http://hdl.handle.net/10393/26333.

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Although testicular cancer is a relatively rare cancer in Canada, accounting for only 1.1% of all malignant neoplasms in males, it is the most common cancer among men 20 to 45. Understanding of the causes of testicular cancer risk in general, and the association with diet in particular, remains limited. Data from the National Enhanced Cancer Surveillance System were used to explore the relationship of diet and testicular cancer risk. There were 601 cases of testicular cancer and 744 controls available for study. We systematically examined 17 food groups, 15 nutrients, and 7 individual foods ba

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Rainham, Daniel Gareth Charles. "Atmospheric risk factors of human mortality." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ59869.pdf.

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Naumburg, Estelle. "Perinatal Risk Factors for Childhood Leukemia." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2002. http://publications.uu.se/theses/91-554-5205-1/.

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46

Yektye, Farahmand Bahman. "Hip fracture : risk factors and mortality /." Stockholm, 2001. http://diss.kib.ki.se/2001/91-628-4741-4/.

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47

Wiltsey, Michael T. Heilbrun Kirk. "Risk factors for intimate partner homicide /." Philadelphia, Pa. : Drexel University, 2008. http://hdl.handle.net/1860/2713.

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48

Gunnell, Anthony S. "Risk factors for cervical cancer development /." Stockholm, 2007. http://diss.kib.ki.se/2007/978-91-7357-437-2/.

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49

Salzer, Jonatan. "Environmental risk factors for multiple sclerosis." Doctoral thesis, Umeå universitet, Klinisk neurovetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-64212.

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Background Multiple sclerosis (MS) is a chronic inflammatory disease of the central nervous system. It usually strikes during young adulthood, and 2.5 million individuals are estimated to have the disease worldwide. The causes of MS are not known, but several factors have been shown to be associated with the risk of the disease, including certain genes, vitamin D, smoking and Epstein- Barr virus infection. Little is known about how/if these factors interact. Methods Study I: The risk of MS by month of birth was investigated using MS cases from the Swedish MS registry and using general populati

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50

Abracen, Jeffrey. "Psychosocial risk factors for HIV infection." Thesis, McGill University, 1995. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=28976.

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A group of 21 HIV-positive gay or bisexual men was compared with a matched group of 22 HIV-negative individuals. All subjects were sexually active gay or bisexual males matched for age, as well as age at first intercourse with males. Subjects completed a detailed sexual history questionnaire as well as a series of standardized measures of psychosocial functioning. Results indicated that subjects engaged in a wide range of unsafe sexual behaviours, and frequently combined drugs with sex. Scores on the Michigan Alcoholism Screening Test (MAST) were significantly correlated with lifetime condom u

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