the number of hospital beds occupied by patients expressed as a percentage of the total beds available in the ward, specialty, hospital, area, or region. It may be recorded in relation to a defined point in time or more usefully for a period, when the calculation is based on bed-days. It is used with other indices (such as *admission rate) to assess the demands for hospital beds in relation to diseases, specialties, or populations and hence to gauge an appropriate balance between demand for health care and number of beds.