Meta-analysis of olfactory function in schizophrenia, first-degree family members, and youths at-risk for psychosis.
Schizophr Bull
; 40(1): 50-9, 2014 Jan.
Article
em En
| MEDLINE
| ID: mdl-23641047
ABSTRACT
BACKGROUND:
Previous research has provided compelling support for olfactory dysfunction in schizophrenia patients, their first-degree relatives, and youth at-risk for psychosis. A previous meta-analysis revealed large effect sizes across olfactory tasks but was limited to 2 olfactory tasks and did not examine moderator variables. Thus, the current meta-analysis was undertaken to incorporate additional studies, risk cohorts, olfactory test domains, and moderator variable analyses.METHOD:
A meta-analysis was conducted on 67 publications examining olfactory function in schizophrenia patients and 15 publications examining olfactory functioning in youth at-risk for psychosis, first-degree relatives of schizophrenia patients, and individuals with schizotypy.RESULTS:
Results revealed medium-to-large olfactory deficits in schizophrenia patients though significant heterogeneity was evident. Several variables moderated overall study effects. At-risk youths similarly demonstrated medium-to-large effect sizes, whereas first-degree relatives and individuals with schizotypy showed small effects.CONCLUSIONS:
Findings suggest robust olfactory deficits in schizophrenia and at-risk youths. In schizophrenia, several variables had significant impact on these deficits and warrant consideration in prospective studies. Our findings also indicate that olfactory measures may be a useful marker of schizophrenia risk status.Palavras-chave
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Base de dados:
MEDLINE
Assunto principal:
Transtornos Psicóticos
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Esquizofrenia
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Transtorno da Personalidade Esquizotípica
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Predisposição Genética para Doença
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Transtornos do Olfato
Idioma:
En
Ano de publicação:
2014
Tipo de documento:
Article