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The effect of image quality on recall rates in a BreastScreening ProgramThompson, Jennifer January 2009 (has links)
Masters Research - Master of Medical Science / Introduction: Between 6-10% of women attending breast screening are recalled to investigate an unclear area on the mammogram. Image quality is known to affect image interpretation and it has been suggested that the number of recalls could be reduced with improved image quality. Aim: This study aimed to investigate the effect image quality has on recall rates, to assess reader consistency using the PGMI classification system and to establish factors leading to recall. Materials and Methods: A six member panel assessed 904 sets of images (698 recalled; 206 non-recalled) through a BreastScreening Program during three separate phases (pilot, main and non-recall). The pilot study was conducted without additional training in PGMI. Levels of agreement and Kappa statistics were calculated to assess intra- and inter-consistency. The percentage of and reasons for inadequate images was calculated; while a case-control study was conducted to establish factors increasing the likelihood of a client being recalled. Results: The level of agreement between panel members significantly increased from the pilot to the main study (45.5% to 57.7%) before decreasing slightly for the non-recall (57.7% to 52.2%). Overall, 3.3% of the 904 sets of images were classed as inadequate; the most common PGMI reason was exposure (31%); the left MLO was considered the most common inadequate projection (30%), with more privately produced (66%) images considered inadequate compared to public images (34%). Inadequate image quality did not hinder the cancer detection rates. The case-control component demonstrated current and previous HRT use, increased breast density, better image quality and images being taken at a public site all contributed to a client being recalled. Conclusion: The results of this study demonstrated that inadequate image quality was not a major factor leading to recall; although twice the number of recalled images were considered inadequate compared to the non-recalled images. The use of the PGMI classification system is highly subjective, with low levels of agreement amongst users. The use of HRT, breast density, imaging site and image quality all contribute to a client being recalled.
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Lévy LIBOR model and credit risk /Ho, Siu Lam. January 2007 (has links)
Thesis (Ph.D.)--Hong Kong University of Science and Technology, 2007. / Includes bibliographical references (leaves 101-104). Also available in electronic version.
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Variance and comovement bounds tests in international market efficiency and integration /Smoluk, Herbert J., January 1997 (has links)
Thesis (Ph. D.)--Lehigh University, 1997. / Includes vita. Includes bibliographical references.
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An empirical analysis of China's equilibrium exchange rate : a co-integration approach : a thesis submitted in partial fulfilment of the requirements for the degree of Masters [i.e. Master] of Commerce and Management at Lincoln University /Su, Ting T. January 2009 (has links)
Thesis (M.C.M.)--Lincoln University, 2009. / Also available via the World Wide Web.
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Current issues in empirical trade estimationMcPherson, Matthew Quinn. January 1900 (has links)
Thesis (Ph. D.)--West Virginia University, 2004. / Title from document title page. Document formatted into pages; contains vi, 101 p. : ill. Includes abstract. Includes bibliographical references (p. 96-101).
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The theory and practice of the gold standard : an application to the convulsions in the ERM /Wan, Ho-fung, Jonathan. January 1994 (has links)
Thesis (M. Econ.)--University of Hong Kong, 1994. / Declaration statement inserted. Includes bibliographical references (leaves 100-103).
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An empirical investigation of the flexible price monetary model of the exchange rate the case of Colombia /Sáenz, Marcelo. January 2000 (has links)
Thesis (M.A.)--West Virginia University, 2000. / Title from document title page. Document formatted into pages; contains vi, 53 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 25-26).
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The interrelationship between New Zealand stock market and exchange rates a dissertation submit [sic] to Auckland University of Technology in fulfilment of the requirements for the degree of Master of Business (MBus), 2008 /Guan, Zhao. January 2008 (has links)
Thesis (MBus) -- AUT University, 2008. / Includes bibliographical references. Also held in print (v, 95 leaves ; 30 cm.) in the Archive at the City Campus (T 332.642 GUA)
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Long term extrapolation and hedging of the South African yield curveThomas, Michael Patrick. January 2009 (has links)
Thesis (M.Sc.)(Mathematics and Applied Mathematics)) -- University of Pretoria, 2008.
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Financial markets, creation and liquidation of firms and aggregate dynamics /Monge Naranjo, Alexander. January 1999 (has links)
Thesis (Ph. D.)--University of Chicago, Dept. of Economics. / Includes bibliographical references. Also available on the Internet.
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