TITLE

Volume of screening mammography and performance in the Quebec population-based Breast Cancer Screening Program

AUTHOR(S)
Théberge, Isabelle; Hébert-Croteau, Nicole; Langlois, André; Major, Diane; Brisson, Jacques
PUB. DATE
January 2005
SOURCE
CMAJ: Canadian Medical Association Journal;1/18/2005, Vol. 172 Issue 2, p195
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Background: In the Quebec Breast Cancer Screening Program (Programme québécois de dépistage du cancer du sein [PQDCS]), radiologists' and facilities' volumes of screening mammography vary considerably. We examined the relation of screening-mammography volume to rates of breast cancer detection and false-positive readings in the PQDCS. Methods: The study population included 307 314 asymptomatic women aged 50-69 years screened during 1998-2000. Breast cancer detection rates were analyzed by comparing all women with screening-detected breast cancer (n= 1709) and a 10% random sample of those without (n = 30 560). False-positive rates were analyzed by comparing the 3159 women with false-positive readings and the 27 401 others in the 10% random sample. Characteristics of participants, radiologists and facilities were obtained from the PQDCS information system. Data were analyzed by means of logistic regression. Results: The rate of breast cancer detection appeared to be unrelated to the radiologist's screening-mammography volume but increased with the facility's screening-mammography volume. The breast cancer detection rate ratio for facilities per-forming 4000 or more screenings per year, compared with those performing fewer than 2000, was 1.28 (95% confidence interval [CI] 1.07--1.52). In contrast, the frequency of false-positive readings was unrelated to the facility's screening volume but was inversely related to the radiologist's screening volume: the rate ratio for readers of 1500 or more screenings per year compared with those reading fewer than 250 was 0.53 (95% CI 0.35--0.79). Interpretation: Radiologists' and facilities' caseloads showed in-dependent and complementary associations with performance of screening mammography in the PQDCS. Radiologists who worked in larger facilities and read more screening mammograms had higher breast cancer detection rates while maintaining lower false-positive rates.
ACCESSION #
15619414

 

Related Articles

  • Mammography in Younger Women: The Dilemma of Diminishing Returns. Calonge, Ned // JNCI: Journal of the National Cancer Institute;5/19/2010, Vol. 102 Issue 10, p668 

    The article discusses a study about breast cancer detection efforts in women below 40 years old. A research study by the Breast Cancer Surveillance Consortium (BCSC) reveals data derived on the effect of screening and diagnostic mammography in over 100,000 women in the age group, and provides a...

  • Indicadores del proceso de tamizaje de cáncer de mama en México: un estudio de caso. Uscanga-Sánchez, Santos; Torres-Mejía, Gabriela; Ángeles-Llerenas, Angélica; Domínguez-Malpica, Raúl; Lazcano-Ponce, Eduardo // Salud Pública de México;sep/oct2014, Vol. 56 Issue 5, p528 

    Objective. To identify, measure and compare the performance indicators of productivity, effective access and quality service for the early detection breast cancer program in Mexico. Material and methods. By means of a study case based on the 2011 Women Cancer Information System (Sicam), the...

  • Screening.  // Current Medical Literature: Breast Cancer;2011, Vol. 23 Issue 2, p67 

    The article discusses two studies on breast cancer screening, published in medical journals in 2010 and 2011. A study by B. N. Hellquist and colleagues examined the effectiveness of population-based service screening with mammography for women from 40 to 49 years old. Another study by S. W....

  • Trends in incidence and detection of advanced breast cancer at biennial screening mammography in The Netherlands: a population based study.  // Breast Cancer Research;2012, Vol. 14 Issue 1, p3091 

    The article offers information on a population based study that examines the general tendency regarding the incidence and detection of advanced breast cancer in the twelve years of biennial screening mammography program in the Netherlands. The study included 351,009 continuous screens of 85,274...

  • Improving uptake in non-attenders of breast screening: selective use of second appointment. Stead, Melissa J.; Wallis, Matthew G.; Wheaton, Margot E. // Journal of Medical Screening;Jun1998, Vol. 5 Issue 2, p69 

    Objective To find the most cost and time effective way of increasing uptake by reinvitation of non-attenders after an initial invitation. Setting Women from the Warwickshire, Solihull, and Coventry breast screening programme who failed to attend their initial invitation. Method Between October...

  • Three common myths about mammography. Kopans, Daniel B. // Contemporary OB/GYN;Aug2004, Vol. 49 Issue 8, p49 

    The article presents several controversies surrounding screening mammography. These include efficacy of screening women before age 50, issues regarding the benefit of screening for women at any age and the belief that early detection of breast cancer may result in their early death. Screening...

  • Breast Ca overdiagnosed in 1 in 10 middle-aged women.  // Contemporary OB/GYN;Jul2006, Vol. 51 Issue 7, p14 

    This article presents the results of a population-based mammographic screening trial regarding the incidence of overdetected cancers in a group of women screened for breast cancer using mammography. Overdetection occurs when a screening test does not detect disease that would require treatment...

  • Effectiveness: The Next Question for Breast Cancer Screening. Harris, Russell // JNCI: Journal of the National Cancer Institute;7/20/2005, Vol. 97 Issue 14, p1021 

    Discusses a study about the effectiveness of breast cancer screening in the United States Mammography screening rates; Effectiveness of breast cancer screening on women who are at increased risk of the disease; Association between screening and mortality.

  • SCREENING FOR BREAST CANCER RESULTS IN OVER-DIAGNOSIS.  // Pulse;7/13/2006, Vol. 66 Issue 28, p26 

    The article discusses the findings of a study about the risk of over-diagnosis in screening for breast cancer in women. The study revealed that more women receiving mammography were identified as having breast cancer as compared to non-screened women. Another harmful outcomes of screening for...

  • Characteristics and screening outcome of women referred twice at screening mammography. Setz-Pels, Wikke; Duijm, Lucien; Louwman, Marieke; Roumen, Rudi; Jansen, Frits; Voogd, Adri // European Radiology;Dec2012, Vol. 22 Issue 12, p2624 

    Objectives: To determine the characteristics and screening outcome of women referred twice at screening mammography. Methods: We included 424,703 consecutive screening mammograms and collected imaging, biopsy and surgery reports of women with screen-detected breast cancer. Review of screening...

Share

Read the Article

Courtesy of VIRGINIA BEACH PUBLIC LIBRARY AND SYSTEM

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics