평가 및 통제 WORLE HEALTH ORGANIZATION TECHNICAL REPORT SERIES THE NATURE OF HEALTH PLANNING PROBLEMS OF EVALUATION * PROCESS Requirements to be satisfied by health information systems The system should be population-based The system should avoid the unnecessary agglomeration of data. The system should be problem-orientated The system should employ functional and operational terms. The system should express information bridfly and imaginatively. The system should make provision for the feedback of data.