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Search Results: 1 - 10 of 143 matches for " Willi Oberaigner "
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Introduction of organised mammography screening in Tyrol: results following first year of complete rollout
Willi Oberaigner, Martin Daniaux, Sabine Geiger-Gritsch, Rudolf Knapp, Uwe Siebert, Wolfgang Buchberger
BMC Public Health , 2011, DOI: 10.1186/1471-2458-11-673
Abstract: Working from the results of the pilot phase, we extended the organised mammography system to all counties in Tyrol. All women living in Tyrol and covered by compulsory social insurance were invited for a mammography, in the age group 40-59 annually and in the age group 60-69 biennially. Screening mammography was offered mainly by radiologists in private practice, with further assessment performed at hospitals. Using the screening database, all well-established performance indicators were analysed and compared with accepted/desired levels as per the EU guidelines.From June 2008 to May 2009, 120,440 women were invited. Per 1000 mammograms, 14 women were recalled for further assessment, nine underwent biopsy and four cancer cases were detected. Of invasive breast cancer cases, 32.3% and 68.4% were ≤ 10 mm and ≤ 15 mm in size, respectively, and 79.2% were node-negative. The positive predictive value for further assessment and for biopsy was 25.9% and 39.9%, respectively. Estimated two-year participation rate was 57.0%. In total, 14 interval cancer cases were detected during one year of follow-up; this is 18.4% of the background incidence rate.In Tyrol, Austria, an organised mammography screening program was implemented in a smooth transition from an existing spontaneous screening system and was completely rolled out within a short time. The high level of performance already seen in the pilot phase was maintained after rollout, and improvements resulting from the pilot phase were affirmed after one year of complete rollout.Breast cancer is the leading cause of female cancer death in all industrialised countries (and also worldwide), and the breast is also the leading incident cancer site for females [1]. Therefore, screening methods for breast cancer are of greatest public health importance. A recently published Cochrane Review, which assessed the effect of mammography screening for breast cancer on mortality and morbidity concluded that screening is likely to reduce bre
Breast cancer incidence and mortality in Tyrol/Austria after fifteen years of opportunistic mammography screening
Willi Oberaigner, Wolfgang Buchberger, Thomas Frede, Rudolf Knapp, Christian Marth, Uwe Siebert
BMC Public Health , 2010, DOI: 10.1186/1471-2458-10-86
Abstract: To study time trends in breast cancer incidence and mortality, we applied the age-period-cohort model by Poisson regression to the official mortality data covering more than three decades from 1970 to 2006 and to the incidence data ranging from 1988 to 2006. In addition, for incidence data we analysed data on breast cancer staging and compared these with EU guidelines.For the analysis of time trend in breast cancer mortality in age groups 40-79, an age-period-cohort model fits well and shows for years 2002-2006 a statistically significant reduction of 26% (95% CI 13%-36%) in breast cancer mortality as compared to 1992-1996.We see only slight non-significant increases in breast cancer incidence. For the past five years, incidence data show a 10% proportion of in situ cases, and of 50% for cases in stages II+.The opportunistic breast cancer screening programme in Tyrol has only in part exploited the mortality reduction known for organised screening programmes. There seems to be potential for further improvement, and we recommend that an organised screening programme and a detailed screening database be introduced to collect all information needed to analyse the quality indicators suggested by the EU guidelines.Breast cancer (BC) is the leading cause of female cancer death in all industrialised countries (and also worldwide) and the breast is also the leading incident cancer site for females [1]. Therefore, screening methods for BC are of greatest public health importance. Efficiency and efficacy of organised mammography screening programmes have been proven in large randomised trials conducted in Europe and North America. For several years already, organised mammography screening programmes have been recommended in the EU[2]. Austria is one of the European countries where up to 2006 no organised programmes were implemented, but where coverage in spontaneous mammography screening could have been rather high. In a micro-census conducted in Austria in 2006-2007, more tha
Introduction of organised mammography screening in tyrol: results of a one-year pilot phase
Willi Oberaigner, Wolfgang Buchberger, Thomas Frede, Martin Daniaux, Rudolf Knapp, Christian Marth, Uwe Siebert
BMC Public Health , 2011, DOI: 10.1186/1471-2458-11-91
Abstract: In June 2007, the system of opportunistic mammography screening in Tyrol was changed to an organised system by introducing a personal invitation system, a training program, a quality assurance program and by setting up a screening database. All procedures are noted in a written protocol. Most EU recommendations for organised mammography screening were followed, except double reading. All women living in Tyrol and covered by social insurance are now invited for a mammography, in age group 40-59 annually and in age group 60-69 biannually. Screening mammography is offered mainly by radiologists in private practice. We report on the results of the first year of piloting organised mammography screening in two counties in Tyrol.56,432 women were invited. Estimated participation rate was 34.5% at one year of follow-up (and 55.5% at the second year of follow-up); 3.4% of screened women were recalled for further assessment or intermediate screening within six months. Per 1000 mammograms nine biopsies were performed and four breast cancer cases detected (N = 68). Of invasive breast cancer cases 34.4% were ≤ 10 mm in size and 65.6% were node-negative. In total, six interval cancer cases were detected during one year of follow-up; this is 19% of the background incidence rate.In the Tyrolean breast cancer screening program, a smooth transition from a spontaneous to an organised mammography screening system was achieved in a short time and with minimal additional resources. One year after introduction of the screening program, most of the quality indicators recommended by the European guidelines had been reached.However, it will be necessary to introduce double reading, to change the rule for BI-RADS 3, and to concentrate on actions toward improving the participation rate.Breast cancer is the leading cause of female cancer death in all industrialised countries (and also worldwide), and the breast is also the leading incident cancer site for females [1]. Therefore, screening metho
Equity Market or Bond Market—Which Matters the Most for Investment? Revisiting Tobin’s q Theory of Investment  [PDF]
Willi Semmler, Lebogang Mateane
Technology and Investment (TI) , 2012, DOI: 10.4236/ti.2012.34029
Abstract: Recent experience seems to have shown that credit markets are more important than equity markets for investment and macrodynamics. This paper examines the effect of Tobin’s equity q and bond q on investment. More specifically we study the role of Tobin’s equity (usual) q, average q and bond q for aggregate investment over the period 1953: Q4-2011: Q1. Employing bond q and equity q, or alternatively bond q and average q, shows that these variables are very relevant in explaining investment. Yet, the time scale matters too. Examining the relationship of these variables over a long time scale, at low frequencies, we can show that the combination of bond q and average q are the most significant determinants of aggregate investment. Moreover, for the longer time scale the two variables, bond q and average q, result in the highest goodness of fit demonstrating good in-sample forecasting properties. As to the individual determinants of aggregate investment over the period 1953: Q4-2011: Q1, bond q is by far the most influential variable at all frequencies since it always has the highest correlation with investment and this correlation is always statistically significant. Similarly, the greater significance of average q, as compared to equity q, is probably an outcome of the financing instruments for investment.
As siglas em cores no Trabalho das passagens, de W. Benjamin
Bolle, Willi;
Estudos Avan?ados , 1996, DOI: 10.1590/S0103-40141996000200003
Abstract: in 1938, w. benjamin elaborated a model of his major work, the arcades project, conceived as a social history of the city of paris in the 19th century; the model remained unconcluded, but there is an integral plan of its construction, discovered in 1981 at the bibliothèque nationale of france. based upon the deciphering of these manuscripts, 80% unpublished, this article presents a synthesis of the arcades model, in form of a constellation of the 30 colored sigla which symbolize the 30 constructive categories. the working hypothesis is that they are an esoteric script, with specific aesthetic, semantic and structurizing values: a mimetic instrument appropriated to read the enigmatic text of the modern metropolis. seven aspects of the sigla are presented in this analysis: historiographical workshop, physiognomical scripts, visualization of time, history as cartography, pictures of mentality, allegorization, and history as radiography. as they operate on the boundary of conceptual and pictographical traditions, the sigla constitute a frontier genre in historiography.
Bibliothèque et architecte ou planification comme tache intégrative
Willi Treichler
Liber Quarterly : The Journal of European Research Libraries , 2002,
Abstract: Exposé sur la base d’un dialogue entre Willi Treichler, Bibliothèque nationale suisse, et Kurt M. Gossenreiter, architecte à Berne et membre de la communauté des architectes BNS”.
Some common features and some differences between the parametric ANOVA for repeated measures and the Friedman ANOVA for ranked data
WILLI HAGER
Psychology Science , 2007,
Abstract: Some relationships between the parametric ANOVA of repeated measures and its nonparametric counterpart, the ANOVA for ranks after Friedman, are discussed. The main reason for some marked differences between both procedures arises from the fact that the mean correlation between the experi-mental conditions, i.e. rB, can vary between the limits –1 ≤ rB ≤ +1 for the parametric ANOVA and usually is greater than zero - only if this is the case, precision is enhanced. In contrast, this correlation always is negative for the Friedman ANOVA and only depends on the number K of experimental condi-tions: rR,B = –1/(K – 1). - In addition, it is stressed that the nonparametric rank tests can be replaced by their parametric counterparts without risking divergent decisions about the statistical hypotheses being tested. The necessary formulae and the respective effect sizes are presented.
RELIABILITY OF MACHINE ELEMENTS IN WIND TURBINES
Willi GRUENDER
Revista Fiabilitate si Durabilitate , 2010,
Abstract: Worldwide electrical energy production generated by wind turbines grows at a rate of 30 percent. This doubles the total production every three years. At the same time the power of individual stations goes up by 20 percent annually. Whereas today the towers, rotors and drive trains have to handle 5 MW, in about six to eight years they might produce up to fifteen MW. As a consequence, enormous pressure is put on the wind turbine manufacturers, the component suppliers and the operators. And because prototype and field testing is limited by its expense, the design of new turbines demands thorough analysis and simulation. Looking at the critical components of a wind turbine this paper describes advanced design tools which help to anticipate failures, but also assists in optimizing reliability and service life. Development of the software tools has been supported by research activities in many universities.
Disaster Risk Reduction: Cases from urban Africa
Willi Faling
Jàmbá : Journal of Disaster Risk Studies , 2010, DOI: 10.4102/jamba.v3i1.37
Abstract: Very little has been written on the growing number of urban disaster risk hotspots, or the integration of disaster risk reduction and human settlement planning in Africa aside from publications by the World Bank, United Nations and a few other international organisations. This book aspires to fill these gaps, and I recommend it as essential reading for any urban development or disaster management practitioner or academic concerned with risk reduction in African cities. I also recommended the book for courses on sustainable human settlements, development planning and disaster risk reduction.
Philosophy from the outside in: Rosenzweig’s critical project
Goetschel Willi
Filozofija i Dru?tvo , 2012, DOI: 10.2298/fid1202065g
Abstract: This paper examines Rosenzweig’s philosophic project in the context of his time as a critical intervention in the discussion of the place of Jewish thought in the university and in society. If Hermann Cohen represented the first generation of Jewish philosophers claiming that participation in the university is constitutive for the institution’s claim to universalism, the second generation-represented by Martin Buber - was more diffident about the university and its openness. For Buber, literary modernism offered what the university would refuse. Disappointed about the failure of the recognition of the efforts of the previous two generations, Rosenzweig represents the third generation. He turns the situation into a creative response anchoring philosophy as a project that calls for a resolute move outside the university.
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