Development of a scale for the measurement of symptom change in an outpatient clinic

R Plutchik, HR Conte, W Spence, P Buckley… - Comprehensive …, 1990 - Elsevier
A brief 21-item symptom rating scale, the Psychiatric Outpatient Rating Scale (PORS), was
developed for use in outpatient clinics. On the basis of its initial use with 86 patients, it was
shown to have high internal and interjudge reliability and evidence of concurrent and
construct validity. Scores on the PORS correlated significantly with the Global Assessment
Scale and with the number of sessions of psychotherapy. For a subsample of 45 patients
rated on the PORS at the beginning and termination of psychotherapy, seven symptoms …
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