The planning of health care is primarily an administrative task. Service re
search supports the health administration in this taste by supplying empiri
cal data to objectify the need for care and ways to cater for that need. In
this, service research on the one hand draws on descriptive and analytical
data of epidemiological studies. On the other hand, indices of social stru
cture provide information about factors influencing the utilisation of heal
th services. Apart from this, different types of service utilisation data a
re used for the analysis of needs. None of the methods mentioned is suffici
ent on its own. Only the integration of the different levels of analysis al
lows sufficiently competent statements on health care needs.