The Inpatient Clinico-Occupational Survey collected data from 3.76 million patients, showing that the average length of stay declined by 16.1 d in FY2008 and by 14.1 d in FY2015. In this study, we assessed the length of hospital stay and readmission, stratified by ICD-10 and employment status. A cross-sectional study was conducted on data from FY2008, including those from 65,806 first hospitalizations and 16,653 readmissions in FY2008, where 62,260 first admissions and 29,242 readmissions in FY 2015. The length of hospital stay was longest in those admitted due to external influences (24.8 d), followed by musculoskeletal disorders (22.5 d). This remained unchanged in FY2015, however, lengths of stay of those were reduced by 20.1 and 20.0 d, respectively. The length of hospital stay for most diseases was longer upon readmission than on first admission, and longer for those who were unemployed. It is necessary to give attention to patients who need to be discharged early due to work, or plan for frequent hospitalization in order to reduce the length of each hospital stay because of the expected increase in the number of elderly workers brought on by a declining birth rate and an aging population.

住院临床职业调查收集了376万名患者的数据，显示2008财年平均住院天数下降了16.1天，2015财年下降了14.1天。在这项研究中，我们评估了住院时间和再入院时间，根据 ICD-10 和就业状况进行分层。对 2008 财年的数据进行了横断面研究，包括 2008 财年首次住院 65,806 例和再入院 16,653 例，其中 2015 财年首次入院 62,260 例和再入院 29,242 例。 因外部影响入院的住院时间最长（ 24.8 天），然后是肌肉骨骼疾病（22.5 天）。这在 2015 财年保持不变，但是，这些人的逗留时间分别减少了 20.1 天和 20.0 天。大多数疾病的住院时间在再入院时比首次入院时更长，而失业者的住院时间更长。需要关注因工作需要提前出院的患者，或计划频繁住院的患者，以减少每次住院时间，因为生育率下降带来的老年工人人数预计会增加率和人口老龄化。