[Analysis of German language consumer information brochures on screening for colorectal cancer].

A total of 17 consumer brochures that deal with the screening for colorectal cancer were analysed by two independently working researchers. The aim was to assess the quality of the information as a basis for evidence-based informed decision making using pre-defined evaluation criteria. No brochures fulfilled the necessary criteria. In most brochures there was a lack of transparency of the information process. No data was provided for estimating individual risks of colorectal cancer morbidity or mortality. With respect to the efficacy of screening no data was provided about relative or absolute risk reductions, number needed to screen, number needed to harm, predictive rates and false positive rates. In conclusion, presently available information brochures in Germany do not allow informed decision-making by consumers.