Prospective memory in non-psychotic first-degree relatives of patients with schizophrenia: a meta-analysis

• Published in: Neuropsychiatric disease and treatment Vol. 15; pp. 1563 - 1571
• Main Authors: Lin, Shi-Ze, Wu, Yan-Kun, Su, Yun-Ai, Si, Tian-Mei
• Format: Journal Article
• Language: English
• Published: New Zealand Dove Medical Press Limited 01-06-2019; Taylor & Francis Ltd; Dove; Dove Medical Press
• Subjects: Bias; Comparative analysis; Disabilities; Endophenotypes; Heredity; Memory; Mental disorders; Meta-analysis; Prospective memory; Psychosis; Relatives; Review; Schizophrenia; Systematic review; United Kingdom; China; schizophrenia; endophenotypes; relatives; prospective memory
• ISSN: 1176-6328; 1178-2021; 1178-2021
• DOI: 10.2147/NDT.S203729

Prospective memory (PM) could be impaired in the non-psychotic first-degree relatives of patients with schizophrenia. This meta-analysis systematically examined the PM of non-psychotic first-degree relatives of patients with schizophrenia. Both Chinese and English databases were systematically searched for articles from the inception of the databases through November 13, 2018. Case-control studies of PM in non-psychotic first-degree relatives of patients with schizophrenia were included in the analyses. Confidence intervals (CIs) and standardized mean differences (SMDs) were calculated utilizing the random effects model. Four studies (n=268) that compared PM performance between non-psychotic first-degree relatives of patients with schizophrenia (n=136) and healthy controls (n=132) were included. Three studies were rated as "high quality", while the quality of evidence of the three outcomes included in this meta-analysis was moderate. Compared with the healthy controls, the non-psychotic first-degree relatives of patients with schizophrenia showed impairments in overall PM (two studies, n=127; SMD: -0.46; 95% CI=-0.82, -0.11,
=0.01; I=0%), event-based PM (EBPM) (four studies, n=268; SMD: -0.56; 95% CI=-0.80, -0.31,
<0.00001; I=0%), and time-based PM (TBPM) (four studies, n=268; SMD: -0.66; 95% CI=-0.90, -0.41,
<0.00001; I=0%). This meta-analysis demonstrated that the overall PM, EBPM, and TBPM might be impaired in the non-psychotic first-degree relatives of patients with schizophrenia.