During the last decades the interest of health scientists has been increasingly focused on patients' needs, the quality of the services offered and the satisfaction level from the available health care. The measurement and evaluation of patient satisfaction is a milestone for the improvement of the services provided - procedures, given that these results can provide a useful variety of information and data that will lead to a high level of health services. For the purpose of this project the results presented concern a measurement of the satisfaction level of patients treated by the Greek Red Cross and more specifically by a service called "Nursing at home". For the collection of the data, questionnaires were used in order to better record the patients' views on the health care service overall as well as their satisfaction levels on particular aspects of the service. The analysis of the results has been based on the multicriteria MUSA method, which is part of the wider category of aggregation-disaggregation approach and is based on the principles of qualitative analysis regression.