M Hellmich

Summary

Affiliation: University of Cologne
Country: Germany

Publications

  1. ncbi request reprint Bayesian approaches to meta-analysis of ROC curves
    M Hellmich
    Department of Epidemiology and Public Health, University of Leicester, UK
    Med Decis Making 19:252-64. 1999
  2. ncbi request reprint A ruler for interpreting diagnostic test results
    M 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
  3. ncbi request reprint Monitoring clinical trials with multiple arms
    M Hellmich
    Department of Medical Statistics, Informatics and Epidemiology, University of Cologne, Germany
    Biometrics 57:892-8. 2001
  4. ncbi request reprint Closure procedures for monotone bi-factorial dose-response designs
    M Hellmich
    Institute of Medical Statistics, Informatics, and Epidemiology, University of Cologne, D 50924 Cologne, Germany
    Biometrics 61:269-76. 2005
  5. doi request reprint [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
  6. ncbi request reprint Influence of displayed image size on radiographic detection of approximal caries
    R Haak
    Centre of Dental Medicine, Department of Operative Dentistry and Periodontology, University of Cologne, Koln, Germany
    Dentomaxillofac Radiol 32:242-6. 2003
  7. pmc Oncogenic human papillomavirus DNA loads in human immunodeficiency virus-positive women with high-grade cervical lesions are strongly elevated
    S J Weissenborn
    Institute of Virology, University of Cologne, 50935 Cologne, Germany
    J Clin Microbiol 41:2763-7. 2003
  8. ncbi request reprint Influence of room lighting on grey-scale perception with a CRT-and a TFT monitor display
    R Haak
    Department of Operative Dentistry and Periodontology, University of Cologne, Koln, Germany
    Dentomaxillofac Radiol 31:193-7. 2002
  9. ncbi request reprint Diagnosing schizophrenia in the initial prodromal phase
    J Klosterkotter
    Department of Psychiatry and Psychotherapy, University of Cologne, Joseph Stelzmann Strasse 9, 50924 Cologne, Germany
    Arch Gen Psychiatry 58:158-64. 2001
  10. ncbi request reprint [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

Collaborators

Detail Information

Publications12

  1. ncbi request reprint Bayesian approaches to meta-analysis of ROC curves
    M 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...
  2. ncbi request reprint A ruler for interpreting diagnostic test results
    M 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...
  3. ncbi request reprint Monitoring clinical trials with multiple arms
    M 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...
  4. ncbi request reprint Closure procedures for monotone bi-factorial dose-response designs
    M 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...
  5. doi request reprint [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...
  6. ncbi request reprint Influence of displayed image size on radiographic detection of approximal caries
    R 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...
  7. pmc Oncogenic human papillomavirus DNA loads in human immunodeficiency virus-positive women with high-grade cervical lesions are strongly elevated
    S 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...
  8. ncbi request reprint Influence of room lighting on grey-scale perception with a CRT-and a TFT monitor display
    R 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...
  9. ncbi request reprint Diagnosing schizophrenia in the initial prodromal phase
    J 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...
  10. ncbi request reprint [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...
  11. ncbi request reprint 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 types
    S 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...
  12. doi request reprint SEM evaluation of root canal debridement with Sonicare CanalBrush irrigation
    M 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...