[Diversity in spite of standards: the special features of NDGMs]

For seven years the German National Disease Management Guidelines Programme (NDMG Programme) has been supported by its funding bodies: the German Medical Association, the National Association of Statutory Health Insurance Physicians, and the Association of Scientific Medical Societies. The objectives of the NDMG Programme are to develop and to implement comprehensive national clinical guidelines for the management of selected illnesses. Key points of NDMG methodology are the strict adherence to the principles of evidence-based medicine as well as the avoidance of contradictory recommendations by means of neutrally facilitated consensus rounds. Despite the standardised NDMG methodology each guideline has individual structural and content features that make it unique. For example, the complex illness type 2 diabetes is presented in topic- and problem-oriented NDMG modules. For unipolar depression, the NDMG was simultaneously developed as a S3 guideline. Furthermore each NDMG group was faced with its own content-based challenges. For instance, in the case of the NDMG Low-back Pain the guideline group intensely and controversially discussed the definition of unspecific low-back pain. The NDMG Asthma does not solely address adults, but also children and adolescents, and the NDMG Heart Failure for the first time covers other health care relevant aspects such as multimorbidity and psychosocial factors in detail. The following article aims to deliver insight into the diversity of the development of National Disease Management Guidelines and to demonstrate the complexity of guideline development.