Abstract
It is significant to consider the analysis of the ^*Momentary Length of Stay in the planning of such long-stay medical facilities as Mental Hospital and Tuberculosis Sansatorium. Meanwhile there is more important problem on the ratio of circulation of beds than on the rate of bed occupancy in the society under social security. I found that the diagram of frequency distribution of Momentary Length of Stay of Tuberculosis putients consists of two exponential functions for the short-term and long-term patients of which each average length of stay is 1 or 5 years. Considering the conclusion mentioned sbove, I have studied the relation among the functional planning of wards, the ratio of circulation of beds and the apportionment of area in each department in the two sanatoriums which are planned to be reconverted into chest hospitals. In this study, I point out that the scales of nursing department and service department are proportional to the numbers of beds. On the contrary the scales of diagnostic facility and out-patients department are proportional to the number of new abmittance, that is (the ratio of circulation of beds)×(the number of beds). ^*The Momentary Length of Stay of a patient is difined here by the days which he has been staying for until inquire day from his entering, including both inquire and entering days.
