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Abstract
We have previously reported that prolactin (PRL) responses to haloperidol 0.5 mg IV
were blunted in subjects characterized by several diagnostic systems of schizophrenia
compared to controls (Keks et al 1990). However, an attempt to find a diagnostic system
most different from controls was unsuccessful due to inherent difficulties in the
statistical analysis of multidiagnostic data. In this paper we present new methodologies.
A test for differences in dependent correlations demonstrated that most of the variance
in stimulated PRL was accounted for by Kraepelinian, and least by Schneiderian and
M. Bleulerian, schizophrenias (p < 0.001). The main symptomatic difference between
nonKraepelinian and Kraepelinian patients was the presence of association disturbance
and feelings of passivity. Patients with both symptoms had a lower stimulated PRL
than controls. Further findings and possible implications are discussed.
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Article info
Publication history
Received in revised form:
February 25,
1992
Received:
March 23,
1991
Identification
Copyright
© 1992 Published by Elsevier Inc.