Zhongguo quanke yixue (Jul 2022)
Factors Associated with Cognitive Impairment in Chinese Patients with End-stage Renal Disease: a Meta-analysis
Abstract
Background Cognitive impairment (CI) is highly prevalent in patients with end-stage renal disease (ESRD) , which seriously affects the prognosis of patients. Early identification of its associated factors is of great significance, but there is no agreement as to existing relevant research conclusions, and no relevant systematic reviews conducted with Chinese patients with ESRD. Objective To systematically evaluate the factors associated with CI in Chinese patients with ESRD. Methods Databases of PubMed, Web of Science, EMBase, CNKI, WanFangData, CQVIP and CBM were searched from inception to October 2021 for studies (including cross-sectional studies, cohort studies and case-control studies) about associated factors of CI in Chinese ESRD patients (with stage CKD5 defined in the 2002 Kidney Disease Outcomes Quality Initiative, or treatment with peritoneal dialysis or hemodialysis) using subject words in combination with free words as search terms with adjustment by the database feature when necessary. Two researchers independently performed literature screening, data extraction, and methodological quality assessment. Stata 15.0 was employed for Meta-analysis. Results In total, 44 studies were included, including 42 172 patients, among which, the cohort studies and case-control studies were rated as high-quality evidence, and the cross-sectional studies as moderate or high-quality evidence. Meta-analysis revealed that older age〔OR=1.17, 95%CI (1.13, 1.22) , P<0.001〕, long duration of dialysis〔OR=1.02, 95%CI (1.00, 1.03) , P=0.008〕, hypertension〔OR=2.02, 95%CI (1.06, 3.86) , P=0.032〕, stroke〔OR=1.93, 95%CI (1.33, 2.80) , P=0.001〕, diabetes〔OR=1.99, 95%CI (1.62, 2.44) , P<0.001〕, high Charlson Comorbidity Index (CCI) 〔OR=5.28, 95%CI (1.48, 18.82) , P=0.010〕, depression〔OR=2.46, 95%CI (1.61, 3.77) , P<0.001〕, high parathyroid hormone (PTH) 〔OR=1.02, 95%CI (1.00, 1.04) , P=0.034〕, high C-reactive protein (CRP) 〔OR=1.20, 95%CI (1.01, 1.42) , P=0.040〕and high Hcy 〔OR=3.34, 95%CI (2.06, 5.42) , P<0.001〕 were associated with increased risk of CI, while male〔OR=0.55, 95%CI (0.37, 0.82) , P=0.003〕, high education level〔OR=0.45, 95%CI (0.37, 0.55) , P<0.001〕, high Hb〔OR=0.91, 95%CI (0.86, 0.95) , P<0.001〕, high serum ALB〔OR=0.77, 95%CI (0.63, 0.94) , P=0.009〕 and high serum creatinine〔OR=0.997, 95%CI (0.995, 0.999) , P=0.003〕were associated with decreased risk of CI. Conclusion The current evidence proves that the risk of CI in Chinese patients with ESRD may be increased with older age, long duration of dialysis, hypertension, stroke, diabetes, high CCI, depression, high PTH, high CRP and high Hcy, and decreased with male, high education level, and high Hb, ALB and Cr. However, the conclusion needs to be verified by more high-quality studies due to limited number and quality of included studies.
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