Categorisation of Hospital Functions by Average Length of Stay of Patients

1983/84年和1986/87年，大阪s市的国民健康保险收据数量分别为6 548和8 000，病人人数分别为2 249和2 651。1983/84年和1986/87年按住院时间分类的患者人数分别为“31天以下”的1,296人和1,458人，“31-90天”的505人和630人，“91-180天”的222人和238人，“181天或以上”的226人和325人。按住院时间分类的患者平均住院时间（天）分别为11.6和11.7天、54.1和54.0天、125.4和127.9天、308.2和288.4天。从患者的平均住院时间来看，应分为急性住院、亚急性住院、中住院、长住院四类，患者住院时间分别为31天以下、31天至90天之间、91天至180天之间、181天及以上。根据1986/87年的数据计算，急症医院需要50张病床，亚急症医院需要100张病床，中期住院需要85张病床，长期住院需要260张病床，总共需要495张病床。四类床位占比分别为10.1%、20.2%、17.2%和52.5%。

The numbers of National Health Insurance Receipts in 1983/84 and 1986/87 in S. city, Osaka, were 6,548 and 8,000, and the numbers of patients were 2,249 and 2,651 respectively.The numbers of patients by categories of length of stay in 1983/84 and 1986/87 were 1,296 and 1,458 for 'shorter than 31 days', 505 and 630 for '31-90 days', 222 and 238 for '91-180 days', and 226 and 325 for '181 days or more', respectively.The average length of stay (days) of patients by categories of length of stay in those years were 11.6 and 11.7, 54.1 and 54.0, 125.4 and 127.9, and 308.2 and 288.4, respectively.Seeing from the average length of stay of patients, there should be four categories of hospitals such as acute hospital, subacute one, middle-stay one, and long-stay one, where patients stay shorter than 31 days, between 31 to 90 days, between 91 to 180 days, and 181 days or over, respectively.It is caluculated from the data of 1986/87 that 50 beds are necessary for acute hospital, 100 for subacute, 85 for middly-stay, and 260 for long-stay, and as a total 495 beds are needed. Distribution of beds among those four categories are 10.1%, 20.2%, 17.2%,and 52.5%, respectively.