The present health care situation for the elderly in many countries is insufficient and not designed according to the health care needs of the aged population. In a pragmatic multicenter primary care setting (n= 1600), the investigators use an evidence based prediction model to find elderly (75+) with high risk for complex medical care or hospitalization and apply a differentiated and directed medical and social care to this risk group, in comparison to usual care. The intervention will include all the latest evidence based tools in the care of elderly (multi-professional team, social support, medical care home-visits, telephone support, general practitioner visits, etc). The project has high potential impact on the development of future care of elderly.