A patient classification system was developed integrating a patient ac
uity instrument with a computerized nursing distribution method based
on an optimization algorithm. The objective was to minimize the total
number Of nursing personnel used by optimally assigning the nursing st
aff to meet the acuity needs of the various clinical units in the hosp
ital. The validity of the model to assign staff was established by a 3
0-day comparison with the existing manual method of assignment.