[Desirable, unfamiliar and in need of communication - the evidence-based decision aid of the Institute for Quality and Efficiency in Health Care (IQWiG)].

In 2004 the German Institute for Quality and Efficiency in Health Care (IQWiG) was given a statutory mandate to prepare and publish evidence-based information for consumers and patients. The current study investigated the extent to which the IQWiG's "Change of Life" information pack was found to be both comprehensible and useful by users. A total of 41 qualitative, semi-structured interviews were conducted with menopausal women. The partial analysis presented here is based solely on the "Decision Aid" part of the information pack. For many women the information contained in the Decision Aid was new and the manner of presentation unusual. In the sample investigated here the Decision Aid was used rather as a confirmation of decisions that had already been made than as an aid in the decision-making process. Where it was not possible to harmonise the scientific evidence presented with the individual's own opinion, the decision-making conflict was intensified. Balancing of individual preferences against study results proved to be difficult for two reasons: first, the unusual manner of presentation and second, the two contrasting poles of "science-based information" and "own preferences", which were not regarded as being of equal significance. This conflict represents a fundamental problem in evidence-based decision aids.