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1.
Int J Neuropsychopharmacol ; 14(9): 1157-64, 2011 Oct.
Article in English | MEDLINE | ID: mdl-21557883

ABSTRACT

Recent studies indicate relatively high international rates of adjunctive psychotropic medication, including mood stabilizers, for patients with schizophrenia. Since such treatments are little studied in Asia, we examined the frequency of mood-stabilizer use and its clinical correlates among hospitalized Asian patients diagnosed with schizophrenia in 2001-2008. We evaluated usage rates of mood stabilizers with antipsychotic drugs, and associated factors, for in-patients diagnosed with DSM-IV schizophrenia in 2001, 2004 and 2008 in nine Asian regions: China, Hong Kong, India, Korea, Japan, Malaysia, Taiwan, Thailand, and Singapore. Overall, mood stabilizers were given to 20.4% (n=1377/6761) of hospitalized schizophrenia patients, with increased usage over time. Mood-stabilizer use was significantly and independently associated in multivariate logistic modeling with: aggressive behaviour, disorganized speech, year sampled (2008 vs. earlier), multiple hospitalizations, less negative symptoms, younger age, with regional variation (Japan, Hong Kong, Singapore>Taiwan or China). Co-prescription of adjunctive mood stabilizers with antipsychotics for hospitalized Asian schizophrenia patients increased over the past decade, and was associated with specific clinical characteristics. This practice parallels findings in other countries and illustrates ongoing tension between evidence-based practice vs. individualized, empirical treatment of psychotic disorders.


Subject(s)
Antimanic Agents/therapeutic use , Antipsychotic Agents/therapeutic use , Practice Patterns, Physicians' , Schizophrenia/drug therapy , Adolescent , Adult , Aged , Aged, 80 and over , Antimanic Agents/administration & dosage , Antipsychotic Agents/administration & dosage , Asia , Cross-Sectional Studies , Diagnostic and Statistical Manual of Mental Disorders , Drug Therapy, Combination , Female , Humans , Male , Middle Aged , Practice Patterns, Physicians'/trends , Schizophrenia/physiopathology , Young Adult
2.
Int J Neuropsychopharmacol ; 14(6): 735-45, 2011 Jul.
Article in English | MEDLINE | ID: mdl-21294941

ABSTRACT

Benzodiazepines are commonly prescribed to patients with schizophrenia in many countries, but as little is known about such treatment in Asia, we evaluated their adjunctive use for 6761 in-patients diagnosed with schizophrenia in nine Asian countries using a cross-sectional study design in 2001, 2004 and 2008. Multivariate logistic regression and multivariate linear regression analyses were performed to assess predictors of benzodiazepine use and dose, respectively. Overall, 54% of the patients received adjunctive benzodiazepines at an average daily dose equivalent to 30.3 mg diazepam, with minor changes over the years sampled. Benzodiazepine use was highest in Taiwan and Japan, lowest in Thailand and China, and was associated with fewer years ill, presence of delusions (OR 1.24), hallucinations (OR 1.22), disorganized speech (OR 1.17), social or occupational dysfunction (OR 1.16), and use of mood stabilizers (OR 3.15), antiparkinsonian (OR 1.79) or antidepressant drugs (OR 1.33), and lower doses of antipsychotics (all p=0.016 to <0.001). Benzodiazepine doses were highest in Taiwan and China, lowest in Korea and Singapore; higher doses were associated with being young, male, physically aggressive, receiving mood stabilizers, and having electroconvulsive treatment (all p=0.019 to <0.001). Benzodiazepine use was associated with neurological and systemic adverse effects. In conclusion, benzodiazepine use was common in Asian patients with schizophrenia. Predictors of benzodiazepine use and dose differed in this population. Critical clinical guidelines should be developed specifically for Asian countries to address sound practices in regard to use of benzodiazepines for psychotic disorders.


Subject(s)
Benzodiazepines/therapeutic use , Hospitalization , Practice Patterns, Physicians' , Psychotropic Drugs/therapeutic use , Schizophrenia/drug therapy , Adult , Aged , Asia , Benzodiazepines/administration & dosage , Benzodiazepines/adverse effects , Cross-Sectional Studies , Diagnostic and Statistical Manual of Mental Disorders , Drug Therapy, Combination/adverse effects , Female , Humans , Male , Middle Aged , Practice Guidelines as Topic , Psychotropic Drugs/administration & dosage , Psychotropic Drugs/adverse effects , Schizophrenia/physiopathology , Statistics as Topic , Young Adult
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