Stephen W Duffy

Summary

Affiliation: American Cancer Society
Country: USA

Publications

  1. ncbi request reprint The impact of organized mammography service screening on breast carcinoma mortality in seven Swedish counties
    Stephen W Duffy
    Department of Mathematics, Statistics and Epidemiology, Cancer Research UK, PO Box 123, Lincoln s Inn Fields, London WC2A 3PX, United Kingdom
    Cancer 95:458-69. 2002
  2. ncbi request reprint Overdiagnosis, sojourn time, and sensitivity in the Copenhagen mammography screening program
    Anne Helene Olsen
    Cancer Research UK, Department of Epidemiology, Mathematics, and Statistics, Wolfson Institute of Preventive Medicine, Charterhouse Square, London, United Kingdom
    Breast J 12:338-42. 2006
  3. ncbi request reprint Bayesian evaluation of breast cancer screening using data from two studies
    Jonathan P Myles
    Department of Mathematics, Statistics and Epidemiology, Cancer Research UK, London, UK
    Stat Med 22:1661-74. 2003
  4. ncbi request reprint Breast cancer in limited-resource countries: early detection and access to care
    Robert A Smith
    American Cancer Society, Atlanta, Georgia 30329, USA
    Breast J 12:S16-26. 2006
  5. ncbi request reprint The randomized trials of breast cancer screening: what have we learned?
    Robert A Smith
    American Cancer Society, 1599 Clifton Road, NE, Atlanta, GA 30329, USA
    Radiol Clin North Am 42:793-806, v. 2004
  6. ncbi request reprint Prospective estimation of rates of change in mammographic parenchymal patterns: influence of age and of hormone replacement therapy
    Jonathan P Myles
    Cancer Research UK, Department of Mathematics, Statistics and Epidemiology, Wolfson Institute of Preventitive Medicine, Charterhouse Square, London EC1M 6BQ, UK
    Breast 13:56-60. 2004
  7. ncbi request reprint Time-dependent effects on survival in breast carcinoma: results of 20 years of follow-up from the Swedish Two-County Study
    Jane Warwick
    Department of Epidemiology, Mathematics, and Statistics, Cancer Research UK, Wolfson Institute of Preventive Medicine, London, UK
    Cancer 100:1331-6. 2004
  8. pmc Overdiagnosis and overtreatment of breast cancer: estimates of overdiagnosis from two trials of mammographic screening for breast cancer
    Stephen W Duffy
    Cancer Research UK Department of Epidemiology, Mathematics and Statistics, Wolfson Institute of Preventive Medicine, Queen Mary College, University of London, London, UK
    Breast Cancer Res 7:258-65. 2005
  9. ncbi request reprint Tumor size and breast cancer detection: what might be the effect of a less sensitive screening tool than mammography?
    Stephen W Duffy
    Cancer Research UK Center for Epidemiology, Mathematics, and Statistics, Wolfson Institute of Preventive Medicine, London, United Kingdom
    Breast J 12:S91-5. 2006
  10. ncbi request reprint Re: Efficacy of breast cancer screening in the community according to risk level
    Stephen W Duffy
    J Natl Cancer Inst 97:1703; author reply 1703-4. 2005

Detail Information

Publications34

  1. ncbi request reprint The impact of organized mammography service screening on breast carcinoma mortality in seven Swedish counties
    Stephen W Duffy
    Department of Mathematics, Statistics and Epidemiology, Cancer Research UK, PO Box 123, Lincoln s Inn Fields, London WC2A 3PX, United Kingdom
    Cancer 95:458-69. 2002
    ..e., nonattenders) after the initiation of organized screening...
  2. ncbi request reprint Overdiagnosis, sojourn time, and sensitivity in the Copenhagen mammography screening program
    Anne Helene Olsen
    Cancer Research UK, Department of Epidemiology, Mathematics, and Statistics, Wolfson Institute of Preventive Medicine, Charterhouse Square, London, United Kingdom
    Breast J 12:338-42. 2006
    ..A modest overdiagnosis was estimated for the Copenhagen screening program, deriving almost exclusively from the first screen. The CIs were very broad, however, and estimates from larger datasets are warranted...
  3. ncbi request reprint Bayesian evaluation of breast cancer screening using data from two studies
    Jonathan P Myles
    Department of Mathematics, Statistics and Epidemiology, Cancer Research UK, London, UK
    Stat Med 22:1661-74. 2003
    ..The method is applied to the synthesis of two studies of mammographic screening in women with a family history of breast cancer, one in Manchester and one in Kopparberg, Sweden...
  4. ncbi request reprint Breast cancer in limited-resource countries: early detection and access to care
    Robert A Smith
    American Cancer Society, Atlanta, Georgia 30329, USA
    Breast J 12:S16-26. 2006
    ..Ideally, for complete evaluation, such projects require notification of deaths among breast cancer cases and staging of diagnosed tumors...
  5. ncbi request reprint The randomized trials of breast cancer screening: what have we learned?
    Robert A Smith
    American Cancer Society, 1599 Clifton Road, NE, Atlanta, GA 30329, USA
    Radiol Clin North Am 42:793-806, v. 2004
    ..The trials of mammographic screening provide conclusive evidence that the policy of offering screening is associated with a significant and substantial reduction in breast cancer mortality...
  6. ncbi request reprint Prospective estimation of rates of change in mammographic parenchymal patterns: influence of age and of hormone replacement therapy
    Jonathan P Myles
    Cancer Research UK, Department of Mathematics, Statistics and Epidemiology, Wolfson Institute of Preventitive Medicine, Charterhouse Square, London EC1M 6BQ, UK
    Breast 13:56-60. 2004
    ..The probability of non-dense patterns and the rate of change to non-dense patterns are reduced with HRT use. Errors of classification are relatively rare, but are dependent on the age of the subject...
  7. ncbi request reprint Time-dependent effects on survival in breast carcinoma: results of 20 years of follow-up from the Swedish Two-County Study
    Jane Warwick
    Department of Epidemiology, Mathematics, and Statistics, Cancer Research UK, Wolfson Institute of Preventive Medicine, London, UK
    Cancer 100:1331-6. 2004
    ..However, to the authors' knowledge, the effect of these factors in the longer term (>10 years after diagnosis) is not yet clear...
  8. pmc Overdiagnosis and overtreatment of breast cancer: estimates of overdiagnosis from two trials of mammographic screening for breast cancer
    Stephen W Duffy
    Cancer Research UK Department of Epidemiology, Mathematics and Statistics, Wolfson Institute of Preventive Medicine, Queen Mary College, University of London, London, UK
    Breast Cancer Res 7:258-65. 2005
    ..Our results suggest that overdiagnosis in mammography screening is a minor phenomenon, but further studies with very large numbers are required for more precise estimation...
  9. ncbi request reprint Tumor size and breast cancer detection: what might be the effect of a less sensitive screening tool than mammography?
    Stephen W Duffy
    Cancer Research UK Center for Epidemiology, Mathematics, and Statistics, Wolfson Institute of Preventive Medicine, London, United Kingdom
    Breast J 12:S91-5. 2006
    ..Our findings suggest that a less sensitive tool might be expected to confer a breast cancer mortality reduction about half of that observed with mammography...
  10. ncbi request reprint Re: Efficacy of breast cancer screening in the community according to risk level
    Stephen W Duffy
    J Natl Cancer Inst 97:1703; author reply 1703-4. 2005
  11. ncbi request reprint Some current issues in breast cancer screening
    Stephen W Duffy
    Cancer Research UK Centre for Epidemiology, Mathematics and Statistics, Wolfson Institute of Preventive Medicine, London EC1M 6BQ, UK
    J Med Screen 12:128-33. 2005
    ..This paper describes examples of approaches to the above issues, along with some important results...
  12. ncbi request reprint The mammographic screening trials: commentary on the recent work by Olsen and Gøtzsche
    Stephen W Duffy
    CA Cancer J Clin 52:68-71. 2002
  13. ncbi request reprint The controversy over breast cancer screening
    Stephen W Duffy
    Hosp Med 63:708-9. 2002
  14. ncbi request reprint Screening for breast cancer
    Stephen W Duffy
    Cancer Research UK, Department of Epidemiology, Mathematics and Statistics, Wolfson Institute of Preventive Medicine, Queen Mary University of London, London EC1M 6BQ, UK
    Surg Oncol Clin N Am 14:671-97. 2005
    ....
  15. ncbi request reprint Some issues in screening for breast and other cancers
    Stephen W Duffy
    Cancer Research UK Centre for Epidemiology, Mathematics and Statistics, Wolfson Institute of Preventive Medicine, London
    J Med Screen 13:S28-34. 2006
    ..There are some issues in screening for cancer, especially breast cancer, which are worthy of further study...
  16. ncbi request reprint Mammography service screening and mortality in breast cancer patients: 20-year follow-up before and after introduction of screening
    Laszlo Tabar
    Department of Mammography, Central Hospital, Falun, Sweden
    Lancet 361:1405-10. 2003
    ..We aimed to assess the long-term effect of mammographic screening on death from breast cancer, taking into account potential biases from self-selection, changes in breast cancer incidence, and classification of cause of death...
  17. ncbi request reprint Mammographic screening: a key factor in the control of breast cancer
    Laszlo Tabar
    Department of Mammography, Central Hospital, Fallun, Sweden
    Cancer J 9:15-27. 2003
  18. ncbi request reprint Update on effects of screening mammography
    Laszlo Tabar
    Lancet 360:337; author reply 339-40. 2002
  19. pmc Are breast cancer screening programmes increasing rates of mastectomy? Observational study
    Eugenio Paci
    Unit of Epidemiology, Centre for the Study and Prevention of Cancer CSPO, Via di S Salvi 12, 50135 Florence, Italy
    BMJ 325:418. 2002
  20. doi request reprint Correcting for lead time and length bias in estimating the effect of screen detection on cancer survival
    Stephen W Duffy
    Cancer Research UK Centre for Epidemiology, Mathematics and Statistics, Wolfson Institute for Preventive Medicine, London, United Kingdom
    Am J Epidemiol 168:98-104. 2008
    ..Here they demonstrate these methods using a series of 25,962 breast cancer cases (1988-2004) from the West Midlands, United Kingdom...
  21. pmc Lymph node status and breast cancer-related lymphedema
    Anand D Purushotham
    King s College London, London, United Kingdom
    Ann Surg 246:42-5. 2007
    ..This study examines the association between nodal positivity and risk of developing breast cancer-related lymphedema (BCRL) in patients who underwent axillary lymph node dissection (ALND)...
  22. ncbi request reprint Single reading with computer-aided detection and double reading of screening mammograms in the United Kingdom National Breast Screening Program
    Fiona J Gilbert
    Department of Radiology, University of Aberdeen, Lilian Sutton Bldg, Foresterhill, Aberdeen, Scotland
    Radiology 241:47-53. 2006
    ..To retrospectively determine if the use of a computer-aided detection (CAD) system can improve the performance of single reading of screening mammograms to match that of double reading in the United Kingdom...
  23. ncbi request reprint Cancer screening in Asia
    Stephen W Duffy
    J Med Screen 13:S1. 2006
  24. ncbi request reprint Commentary: axillary dissection in breast cancer updated
    Stephen W Duffy
    Breast 14:83-4. 2005
  25. ncbi request reprint Mammographic parenchymal patterns and self-reported soy intake in Singapore Chinese women
    Rupert W Jakes
    National Medical Research Council Clinical Trials and Epidemiology Research Unit, Singapore 169039
    Cancer Epidemiol Biomarkers Prev 11:608-13. 2002
    ..20-0.98). The association between high soy intake and a reduced risk of mammographic parenchymal patterns that are associated with high breast cancer risk may have important implications in breast cancer prevention...
  26. ncbi request reprint Prognosis of small hepatocellular carcinoma treated by percutaneous ethanol injection and transcatheter arterial chemoembolization
    Chao Sheng Liao
    Department of Internal Medicine, Shin Kong Wu Ho Su Memorial Hospital, No 95, Wen Chang Road, Taipei, Taiwan, Republic of China
    J Clin Epidemiol 55:1095-104. 2002
    ..Our results suggest the optimal frequency of clinical surveillance of small HCC cases after treatment should take account of increased hazard rate with time and the roles of pretreatment clinico-pathologic variables...
  27. ncbi request reprint The Gothenburg Breast Screening Trial
    Nils Bjurstam
    Department of Radiology, Center for Breast Imaging, University Hospital of North Norway, Tromsø, Norway
    Cancer 97:2387-96. 2003
    ..Although there is evidence for a reduction in breast carcinoma mortality with mammographic screening, some doubts have been expressed, and there is still uncertainty regarding the age specific effects...
  28. ncbi request reprint Misclassification in a matched case-control study with variable matching ratio: application to a study of c-erbB-2 overexpression and breast cancer
    Stephen W Duffy
    Department of Epidemiology, Wolfson Institute of Preventive Medicine, Queen Mary University of London, Charterhouse Square, London EC1M 6BQ, UK
    Stat Med 22:2459-68. 2003
    ..An example is given from a study of risk factors for progression of benign breast disease to breast cancer, in which the risk factor is a biological marker measured with poor sensitivity...
  29. pmc Imputation of a true endpoint from a surrogate: application to a cluster randomized controlled trial with partial information on the true endpoint
    Richard M Nixon
    MRC Biostatistics Unit, Institute of Public Health, Robinson Way, Cambridge, CB2 2SR, UK
    BMC Med Res Methodol 3:17. 2003
    ..Data are only available for the true end point on a sub set of the practices, but there are surrogate data for almost all of the audited practices and for most of the remaining practices...
  30. ncbi request reprint A breast cancer prediction model incorporating familial and personal risk factors
    Jonathan Tyrer
    Department of Epidemiology, Mathematics and Statistics, Cancer Research UK
    Stat Med 23:1111-30. 2004
    ..This risk was further refined based on the woman's personal history. The model has been incorporated into a computer program that gives a personalised risk estimate...
  31. ncbi request reprint Tamoxifen and breast density in women at increased risk of breast cancer
    Jack Cuzick
    Cancer Research UK, Department of Epidemiology, Mathematics and Statistics, Wolfson Institute of Preventive Medicine, Queen Mary College, University of London, London, UK
    J Natl Cancer Inst 96:621-8. 2004
    ..We investigated mammographic breast density in healthy women with an increased risk of breast cancer at baseline and during 54 months of tamoxifen treatment...
  32. ncbi request reprint Progression rates of colorectal cancer by Dukes' stage in a high-risk group: analysis of selective colorectal cancer screening
    Jau Min Wong
    Department of Internal Medicine, College of Public Health, National Taiwan University Hospital, No 19 Hsuchow Road, Taipei 100, Taiwan
    Cancer J 10:160-9. 2004
    ..The progression rates of colorectal cancer by Dukes' stage in a high-risk group were estimated and applied to evaluate the efficacy of different screening regimens...
  33. ncbi request reprint Mammographic tumor features can predict long-term outcomes reliably in women with 1-14-mm invasive breast carcinoma
    Laszlo Tabar
    Mammography Department, Central Hospital, Falun, Sweden
    Cancer 101:1745-59. 2004
    ..The radiologic images of 1-14-mm invasive breast carcinomas can be classified into 5 separate categories. The use of these mammographic indicators to predict patient outcome has important prognostic and therapeutic implications...
  34. doi request reprint Single reading with computer-aided detection for screening mammography
    Fiona J Gilbert
    Aberdeen Biomedical Imaging Centre, University of Aberdeen, Aberdeen, Scotland, United Kingdom
    N Engl J Med 359:1675-84. 2008
    ..We conducted a trial to determine whether the performance of a single reader using a computer-aided detection system would match the performance achieved by two readers...