“…Among them, LOS is not necessarily a reflection of health complexity, since it may rather be related to local hospitalisation rules and/or discharge practices, to the population served or to doctors' attitudes regarding stay duration rather than a patient's care needs . It has also been observed that elderly people constitute a high proportion of those patients admitted to internal medicine units in Spain , having a mean LOS considerably higher than in Spain's general hospitals . In the current study, the average age was 76 years, also much older than those studied with the INTERMED in other medical groups .…”