© 1999 by Oxford University Press
Journal of the National Cancer Institute Monographs, No. 25, 101-119,
1999
© 1999 Oxford University Press
Risk Perception and Risk Communication for Cancer Screening Behaviors: a Review
Correspondence to: Sally W. Vernon, Ph.D., School of Public Health, The University of Texas Health Science Center at Houston, P.O. Box 20186, Houston, TX 77225 (e-mail: svernon{at}utsph.sph.uth.tmc.edu).
This review summarizes and synthesizes research findings on risk perception and risk communication related to cancer screening behaviors. The focus is on cancers for which there is evidence that screening reduces mortality, i.e., cervical, breast, and colorectal cancers. The following questions are addressed: 1) Is perceived risk associated with relevant cancer screening behaviors? 2) What factors are associated with perceived risk? 3) Is the relationship between perceived risk and cancer screening behaviors modified by other factors? 4) Have interventions to change perceived risk been effective in modifying risk perceptions? 5) Are these changes related to subsequent cancer screening behaviors? Methodologic issues are discussed, and future research needs are identified. There was consistent evidence that perceived risk was associated with mammography screening, but there were insufficient data on these associations for cervical or colorectal cancer screening behaviors. There was some evidence that perceived risk mediated the association between other variables and screening behaviors; however, because of the small number of studies, the findings are best viewed as hypothesis generating. Studies of interventions to modify risk perceptions provided some support for the view that they are modifiable, but there was conflicting evidence that these changes were related to subsequent cancer screening. Methodologic studies of how best to measure perceived risk are needed. Because most data on the correlates of perceived risk were cross-sectional, it is difficult to determine whether perceived risk is a cause or an effect in relation to cancer screening. Longitudinal studies that measure perceived risk in defined populations with different cancer screening histories and that include follow-up for screening and repeated measurements of risk perception are needed to clarify this relationship.
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