Abstract
Rationale
The relative effectiveness of the atypical antipsychotic drugs and conventional agents in patients with early-stage schizophrenia has not been comprehensively determined.
Objectives
The aim of our study was to evaluate the efficacy and safety of seven antipsychotic drugs for the maintenance treatment in patients with early-stage schizophrenia.
Methods
In a 12-month open-label, prospective observational, multicenter study, 1,133 subjects with schizophrenia or schizophreniform disorder within 5 years of onset were monotherapy with chlorpromazine, sulpiride, clozapine, risperidone, olanzapine, quetiapine, or aripiprazole. The primary measure was the rate of treatment discontinuation for any reason. Secondary outcomes included measures for clinical and functional outcomes and tolerability.
Results
The percentage of patients discontinued treatment within 12 months was 41.4% for chlorpromazine, 39.5% for sulpiride, 36.7% for clozapine, 40.2% for risperidone, 39.6% for olanzapine, 46.9% for quetiapine, and 40.2% for aripiprazole, a nonsignificant difference (p = 0.717); there were no significant differences among these seven treatments on discontinuation due to relapse, intolerability, patient decision, or nonadherence (all p values ≥ 0.260). Extrapyramidal symptoms were more prominent in chlorpromazine and sulpiride treatment groups. Anticholinergic side effects were most common with clozapine and chlorpromazine. Weight gain was most common with olanzapine and clozapine.
Conclusions
The efficacy of seven antipsychotic medications for the maintenance treatment appeared similar in early-stage schizophrenia. With regard to the high dropout rate and side effects, special programs are needed to keep efficacy and safety of antipsychotics maintenance treatment for schizophrenia with early stage
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Acknowledgments
This research was supported by the National Key Technologies R&D Program in the 10th 5-year-plan of China (grant no. 2004BA720A22), by the National Natural Science Foundation of China (grant no. 30630062 and 30900485), and by the National Basic Research Program of China (grant no. 2010CB529601).
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Clinical Trials.gov Identifier: NCT00654576
Guo and Fang contributed equally to the study.
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Guo, X., Fang, M., Zhai, J. et al. Effectiveness of maintenance treatments with atypical and typical antipsychotics in stable schizophrenia with early stage: 1-year naturalistic study. Psychopharmacology 216, 475–484 (2011). https://doi.org/10.1007/s00213-011-2242-3
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DOI: https://doi.org/10.1007/s00213-011-2242-3