Affiliation: University of Cologne
- Bayesian approaches to meta-analysis of ROC curvesM Hellmich
Department of Epidemiology and Public Health, University of Leicester, UK
Med Decis Making 19:252-64. 1999..Recommendations and suggestions for further research are made. Computer code for the more advanced methods may either be downloaded via the Internet or be found elsewhere...
- A ruler for interpreting diagnostic test resultsM Hellmich
Institute of Medical Statistics, Informatics and Epidemiology, University of Cologne, Joseph Stelzmann Str 9, 50931 Koln, Germany
Methods Inf Med 44:124-6. 2005..To simplify this calculation a geometric solution in form of a ruler is presented...
- Monitoring clinical trials with multiple armsM Hellmich
Department of Medical Statistics, Informatics and Epidemiology, University of Cologne, Germany
Biometrics 57:892-8. 2001..The main focus of the article is on the application and extension of (adaptive) closed testing procedures in the group sequential setting that strongly control the familywise error rate. A numerical example is given for illustration...
- Closure procedures for monotone bi-factorial dose-response designsM Hellmich
Institute of Medical Statistics, Informatics, and Epidemiology, University of Cologne, D 50924 Cologne, Germany
Biometrics 61:269-76. 2005..Full computer code written in the R language is available from the Internet...
- [Should all patients with thyroid nodules > or = 1 cm undergo fine-needle aspiration biopsy?]Harald Schicha
Klinik und Poliklinik für Nuklearmedizin der Universität zu Köln, Kerpener Str 62, 50937 Koln
Nuklearmedizin 48:79-83. 2009..A combination of sonographic criteria and scintigraphy, even in patients with normal TSH-levels, is suited to selected thyroid nodules for FNAB...
- Influence of displayed image size on radiographic detection of approximal cariesR Haak
Centre of Dental Medicine, Department of Operative Dentistry and Periodontology, University of Cologne, Koln, Germany
Dentomaxillofac Radiol 32:242-6. 2003..To evaluate the validity of approximal caries detection on digital bitewing radiographs displayed at different image sizes on either a cathode ray tube (CRT) monitor or a thin film transistor (TFT) monitor...
- Oncogenic human papillomavirus DNA loads in human immunodeficiency virus-positive women with high-grade cervical lesions are strongly elevatedS J Weissenborn
Institute of Virology, University of Cologne, 50935 Cologne, Germany
J Clin Microbiol 41:2763-7. 2003..Our data reflect the aggressive course of HPV infection in HIV-positive women...
- Influence of room lighting on grey-scale perception with a CRT-and a TFT monitor displayR Haak
Department of Operative Dentistry and Periodontology, University of Cologne, Koln, Germany
Dentomaxillofac Radiol 31:193-7. 2002..To determine the influence of ambient lighting on grey-scale perception using a cathode-ray tube (CRT) and a thin film transistor (TFT) computer display...
- Diagnosing schizophrenia in the initial prodromal phaseJ Klosterkotter
Department of Psychiatry and Psychotherapy, University of Cologne, Joseph Stelzmann Strasse 9, 50924 Cologne, Germany
Arch Gen Psychiatry 58:158-64. 2001..In schizophrenia research, early detection in the initial prodrome before first psychotic episodes is a major topic. Therefore, the prognostic accuracy of initial prodromal symptoms was examined prospectively...
- [Is the diagnosis of schizophrenic illness possible in the initial prodromal phase to the first psychotic manifestation?]J Klosterkotter
Klinik und Poliklinik fur Psychiatrie und Psychotherapie, Universitat zu Koln
Fortschr Neurol Psychiatr 68:S13-21. 2000..Thus in future, an early intervention related to them might enable a prevention of first psychotic episodes...
- Comparison of different isolation techniques prior gene expression profiling of blood derived cells: impact on physiological responses, on overall expression and the role of different cell typesS Debey
Molecular Tumor Biology and Tumor Immunology, Center for Internal Medicine, University of Cologne, Cologne, Germany
Pharmacogenomics J 4:193-207. 2004..Our data therefore will help to optimize clinical studies applying gene expression analysis of peripheral blood to exploit drug responses and to better understand changes associated with disease...
- SEM evaluation of root canal debridement with Sonicare CanalBrush irrigationM I Salman
Policlinic for Operative Dentistry and Periodontology, University of Cologne, Cologne, Germany
Int Endod J 43:363-9. 2010..To determine the efficacy of Sonicare CanalBrush irrigation for root canal cleaning...