Publications by authors named "Antonis T Theofilidis"

Background: The aim of the current study was to explore the effect of gender, age at onset, and duration on the long-term course of schizophrenia.

Methods: Twenty-nine centers from 25 countries representing all continents participated in the study that included 2358 patients aged 37.21 ± 11.

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Objective: The aim the study was to calculate remission, recovery and relapse rates in first episode patients with schizophrenia (FES) vs. patients at a later phase (non-FES).

Methods: Thirty-two FES and 101 non-FES patients took part in the study.

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Background: The aim of the current study was to explore the changing interrelationships among clinical variables through the stages of schizophrenia in order to assemble a comprehensive and meaningful disease model.

Methods: Twenty-nine centers from 25 countries participated and included 2358 patients aged 37.21 ± 11.

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Background: Obsessive-compulsive disorder (OCD) is often comorbid with Bipolar Disorder (BD), complicating its presentation and management. OCD prevalence rates in BD vary widely across studies and recent meta-analyses.

Objective: We performed a comprehensive systematic review and meta-analysis of studies reporting cross-sectional or lifetime OCD prevalence in BD, assessed by meta-regression various determinants of estimated prevalence and compared it with major depressive disorder (MDD) patients and general population subjects included in extracted studies.

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Introduction: A specific clinically relevant staging model for schizophrenia has not yet been developed. The aim of the current study was to evaluate the factor structure of the PANSS and develop such a staging method.

Methods: Twenty-nine centers from 25 countries contributed 2358 patients aged 37.

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