I am not aware of such standards, nor do they make much intuitive sense. For example, what would be considered an appropriate bed occupancy rate? If there is only one hospital serving a large community, chances are that the occupancy rate would be close to 100%. In communities with more hospitals, the occupancy rate is naturally lower.

As for ALOS (avg length of stay), in the US, Medicare (payor for individuals > 65 years) pays hospitals based on a rate assuming a certain length of stay (LOS) per condition. this is certainly different than dictating what the appropriate ALOS should be. if a patient stays in the hospital beyond the paid LOS, the hospital absorbs those costs.

Perhaps you have more information to provide as to why you are asking this question, and why do you think that there should be some guidelines as to what appropriate levels should be?

Thank you Ariel for your answer which makes sense to me for sure.

actually, and frankly, what made me ask this question is that I am writing up a thesis on measuring the efficiency of some local hospital using Pabon Lasso model, and my academic supervisor told me that there are such standards, or maybe some specifications rather than standards, and I have searched for that and couldn't find any.

The easiest thing here is to ask your supervisor directly where you can find those specifications. I have never heard of such standards. Perhaps you supervisor can enlighten us both :-)

The papers on hospital bed numbers at http://www.hcaf.biz/2010/Publications_Full.pdf are a good resource. Hospital occupancy is a function of the principles in queuing theory. The turn-over-interval is a result of the size of the queue to entry. Average LOS can be underestimated by over 4.5% by using an integer count of midnight stays. The gold standard is to use days, hours and minutes.