One-third of women who are given information about the chance of "overdiagnosis" through the U.K.'s National Health Service (NHS) breast screening program may not fully understand those risks, scientists from Cancer Research UK reported online in the British Journal of Cancer on 29 August.
In a survey of around 2,200 women, the researchers from the University College London found that 64% felt they fully understood the information given about overdiagnosis, defined as the chance that screening will pick up cancers that would never have gone on to cause any harm.
The researchers also determined that despite uncertainty over the information, only 7% said they would be less likely to attend screening; 4% indicated they would be more likely to attend screening.