期刊
EUROPEAN ARCHIVES OF PSYCHIATRY AND CLINICAL NEUROSCIENCE
卷 272, 期 7, 页码 1139-1155出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00406-022-01416-6
关键词
Cognitive impairment; Domains impaired; Determinants; Schizophrenia
资金
- DELTAS Africa Initiative [DEL-15-01]
- African Academy of Sciences (AAS)'s Alliance for Accelerating Excellence in Science in Africa (AESA)
- New Partnership for Africa's Development Planning and Coordinating Agency (NEPAD Agency)
- Wellcome Trust [DEL-15-01]
- UK government
Cognitive impairment is a core symptom of schizophrenia, and systematic reviews have shown that individuals with schizophrenia experience lower cognitive functioning, particularly in the domains of processing speed, verbal memory, and working memory. These impairments are associated with worse functionality, reduced insight, childhood trauma, and aggressive behavior.
Cognitive impairment is one of the core symptoms of schizophrenia. Quite a number of systematic reviews were published related to cognitive impairment in people with schizophrenia (PWS). This umbrella review, therefore, aimed at reviewing and synthesizing the findings of systematic reviews related to domains of cognition impaired and associated factors in PWS. We searched four electronic databases. Data related to domains, occurrence, and associated factors of cognitive impairment in PWS were extracted. The quality of all eligible systematic reviews was assessed using A MeaSurement Tool to Assess methodological quality of systematic Review (AMSTAR) tool. Results are summarized and presented in a narrative form. We identified 63 systematic reviews fulfilling the eligibility criteria. The included reviews showed that PWS had lower cognitive functioning compared to both healthy controls and people with affective disorders. Similar findings were reported among psychotropic free cases and people with first episode psychosis. Greater impairment of cognition was reported in processing speed, verbal memory, and working memory domains. Greater cognitive impairment was reported to be associated with worse functionality and poor insight. Cognitive impairment was also reported to be associated with childhood trauma and aggressive behaviour. According to our quality assessment, the majority of the reviews had moderate quality. We were able to find a good number of systematic reviews on cognitive impairment in PWS. The reviews showed that PWS had higher impairment in different cognitive domains compared to healthy controls and people with affective disorders. Impairment in domains of memory and processing speed were reported frequently.
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