Abstract
The _Psychiatric Impairment Rating Scale _has been used in Australia for over 20 years to determine a compensable proportion for patients with a personal injury. This study examined the records of the ratings of 30 psychiatrists on the scale. Psychological injury versus other injury was distinguished by the_ PIRS_. Correlations between the aggregate score, the median class and the overall percentage impairment rating were all high (.819 to.960). The distribution of ratings on each of the six sub-functions varied markedly. There was a preponderance of category 3 ratings and the distribution of overall percentage impairment was skewed negatively. The coefficient alpha based on the aggregate score was.731. Independent ratings (N=15) of the same patients, however, showed substantial concurrent stability of judgements.
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