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Women overestimate effectiveness of breast screening
October 12, 2001Women either overestimate or are poorly informed about the effectiveness of breast screening, suggests research in the Journal of Epidemiology and Community Health. But these are the very women who attend for screening. To give them the facts might deter them from being screened, so creating a public health dilemma, suggest the authors.
The researchers interviewed 895 randomly selected women between the ages of 40 and 80, none of whom had breast cancer. The women were asked to estimate the effectiveness of regular screening for the prevention of breast cancer deaths in those over 50.
Fewer than one in five correctly stated that breast screening can reduce the risk of death from breast cancer by about 25 per cent. Over half the interviewees said they thought screening halved or reduced the risk of death by as much as 75 per cent. One in four said they simply didn't know how effective breast screening was.
The women who were overoptimistic about breast cancer screening also considered themselves to be at higher risk of developing the disease. Misconceptions about screening's power to cut breast cancer deaths were also consistently associated with more positive attitudes towards screening and an intention to have a mammogram in the future.
The authors point out that unrealistic expectations or being poorly informed mean that women are not able to give truly informed consent for the procedure. But will the provision of more accurate information result in fewer women being screened, they ask?
British Medical Journal (BMJ)
The women who were overoptimistic about breast cancer screening also considered themselves to be at higher risk of developing the disease. Misconceptions about screening's power to cut breast cancer deaths were also consistently associated with more positive attitudes towards screening and an intention to have a mammogram in the future.
The authors point out that unrealistic expectations or being poorly informed mean that women are not able to give truly informed consent for the procedure. But will the provision of more accurate information result in fewer women being screened, they ask?
British Medical Journal (BMJ)
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