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To test the reliability and robustness of the CPRS in use by different disciplines we obtained 49 pairs of ratings on depressed patients in England and Sweden during treatment. Each rater pair consisted of a psychiatrist trained as a rater plus either a psychologist, a general practitioner, or a nurse, who had not been trained as a rater. The 17 most commonly rated items in depressive illness showed good inter-rater reliability for all groups and demonstrated the robustness of the scale even in training sessions. The implications of this for future interdisciplinary research are discussed along with suggestions for the use of the CPRS for teaching purposes.
Montgomery et al. (Sat,) studied this question.