Term: Average Length of Stay (ALOS)

Glossary Definition

Last Updated: 2007-09-26


The mean number of days of care for inpatient hospitalizations for residents of a given region. Calculated by dividing total number of hospital days for residents of a given region for the fiscal year by total number of inpatient hospital separations during the same period. Zero day stays for surgical outpatient care are not included in the calculation. This is usually hospital inpatient stays but it may also refer to mental health and personal care homes residents.

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