Abstract
ObjectivesSpanish women do not make an informed choice about their participation in breast cancer screening. Our study hypothesised that providing individualised and accurate information about the benefits and risks of the mammography screening programme in Spain would increase their knowledge. Patients and methodA randomised controlled clinical trial was conducted in 434 women aged between 45 and 69 years: 216 were assigned to the intervention group and 218 to the control group. The degree of knowledge about the benefits and risks of mammography screening was determined from questionnaires administered at baseline and after one month. Secondarily, the participants’ attitudes, anxiety and depression and cancer worry were analysed. ResultsGood knowledge was acquired by 15 of 178 women (8.4%) in the control group and 32 of 177 (18.1%) in the intervention group (P=.008). The relative risk of acquiring a good level of knowledge about the programme was 2.39 times higher in women in the intervention group than in those in the control group (95% CI 1.24-4.60). No differences were found in the secondary endpoints. ConclusionsWomen have a very poor level of knowledge about mammography screening, with their main information source being television. Individualized information significantly increased the proportion of women with good knowledge but the percentages remained very low. Women had a very positive attitude to screening and a negative impact in the psychosocial sphere due to their participation was not observed.
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