[Christmas article. Significantly fewer acute hospital admissions on days off].

The number of acute admissions in Danish hospitals is increasing and is causing recurrent overcrowding problems. There are fewer hospitalisations on days off, like weekends, public holidays and vacations, and this phenomenon is analysed in our review with data from the period 1.1.2008-31.12.2017. There were 20-30% fewer acute admissions on days off than on the about 60% normal working days in Denmark, and apparently without compensatory increases following the days off. Our findings suggest, that 1) doctors' indications for acute admissions cannot possibly be based on strict clinical criteria alone, and 2) the problem of growing hospitalisation and overcrowding could perhaps be attenuated by increasing the number of days off in the Danish healthcare system. However, further studies are required, to ensure that the quality of patient care is not adversely affected.