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Journal of General Internal Medicine

, Volume 30, Issue 2, pp 242–248 | Cite as

The Psychological Harms of Screening: the Evidence We Have Versus the Evidence We Need

  • Jessica T. DeFrank
  • Colleen Barclay
  • Stacey Sheridan
  • Noel T. Brewer
  • Meredith Gilliam
  • Andrew M. Moon
  • William Rearick
  • Carolyn Ziemer
  • Russell Harris
Review

ABSTRACT

BACKGROUND

Systematic reviews for the US Preventive Services Task Force have found less high-quality evidence on psychological than physical harms of screening. To understand the extent of evidence on psychological harms, we developed an evidence map that quantifies the distribution of evidence on psychological harms for five adult screening services. We also note gaps in the literature and make recommendations for future research.

METHODS

We systematically searched PubMed, PsycInfo, and CINAHL from 2002 to 2012 for studies of any research design that assessed the burden or frequency of psychological harm associated with screening for: prostate and lung cancers, osteoporosis, abdominal aortic aneurysm (AAA) and carotid artery stenosis (CAS). We also searched for studies that estimated rates of overdiagnosis (a marker for unnecessary labeling). We included studies published in English and used dual independent review to determine study inclusion and to abstract information on design, types of measures, and outcomes assessed.

RESULTS

Sixty-eight studies assessing psychological harms met our criteria; 62 % concerned prostate cancer and 16 % concerned lung cancer. Evidence was scant for the other three screening services. Overall, only about one-third of the studies used both longitudinal designs and condition-specific measures (ranging from 0 % for AAA and CAS to 78 % for lung cancer), which can provide the best evidence on harms. An additional 20 studies that met our criteria estimated rates of overdiagnosis in lung or prostate cancer. No studies estimated overdiagnosis for the non-cancer screening services.

DISCUSSION

Evidence on psychological harms varied markedly across screening services in number and potential usefulness. We found important evidence gaps for all five screening services. The evidence that we have on psychological harms is inadequate in number of studies and in research design and measures. Future research should focus more clearly on the evidence that we need for decision making about screening.

KEY WORDS

screening psychosocial 

Notes

Acknowledgements

This work was supported by grant # 1P01HS021133-01 from the Agency for Healthcare Research and Quality (AHRQ). The funder had no role in the design, conduct, or analysis of this study or in the decision to submit the article for publication. We thank members of the UNC Research Center for Excellence in Clinical Preventive Services who conceptualized the taxonomy of screening harms (Carmen Lewis, MD; Maihan Vu, DrPH; Christine Kistler, MD; and Carol Golin, MD) that provided the framework for our research. We also thank Kathleen McGraw, MA, with the UNC Health Sciences Library for her assistance with our systematic search.

Conflicts of Interest

The authors declare that they do not have any conflicts of interest.

Supplementary material

11606_2014_2996_MOESM1_ESM.docx (72 kb)
ESM 1 (DOCX 72 kb)

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Copyright information

© Society of General Internal Medicine 2014

Authors and Affiliations

  • Jessica T. DeFrank
    • 1
    • 2
    • 7
  • Colleen Barclay
    • 1
  • Stacey Sheridan
    • 1
    • 3
  • Noel T. Brewer
    • 1
    • 2
  • Meredith Gilliam
    • 4
  • Andrew M. Moon
    • 5
  • William Rearick
    • 4
  • Carolyn Ziemer
    • 6
  • Russell Harris
    • 1
    • 3
  1. 1.Research Center for Excellence in Clinical Preventive ServicesUniversity of North Carolina at Chapel HillChapel HillUSA
  2. 2.UNC Gillings School of Global Public Health, Department of Health BehaviorUniversity of North Carolina at Chapel HillChapel HillUSA
  3. 3.University of North Carolina, School of MedicineChapel HillUSA
  4. 4.Department of Internal MedicineUniversity of Michigan Health SystemAnn ArborUSA
  5. 5.Department of MedicineUniversity of WashingtonSeattleUSA
  6. 6.University of North Carolina HospitalsChapel HillUSA
  7. 7.Department of Health BehaviorUNC Gillings School of Global Public HealthChapel HillUSA

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