We are very grateful to Snowden 1 for using our pharmaco-psychometric triangle 2 and our clinimetric considerations 3 when investigating the collaborative relationship between the patient and his or her psychiatrist. His figure 1 is based on a placebo-controlled trial in schizophrenic patients 4 which was subsequently clinimetrically analysed 2 in order to validate the scales for antipsychotic effect, for extrapyramidal side effects, and for antidepressive effect in a haloperidol dose-response evaluation by use of effect size statistics.
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