[Perroca's instrument for patient classification: reliability test for evaluators agreement--correlation].

The purpose of this research was to check the reliability of Perroca's instrument model for classifying patients, based on the particular needs of nursing care. This patients' classification instrument was applied in 50 patients randomly chosen by the nurses of the General Intensive Care Unit of a medical school hospital. Pearson's quotient correlation was used to analyze the concordance degree of the total scores by the nurses. The reliability analysis showed a high and positive correlation in relation to scores given by the nurses.