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Long-term survival and death causes of systemic lupus erythematosus in China: a systemic review of observational studies.

Abstract：

:Systemic lupus erythematosus (SLE) is a chronic autoimmune disease with an increased risk of death compared to general population. Although previous studies showed improvement in survival of SLE, the long-term prognosis has not been elaborated in China.This study aims to integrate the observational studies estimating current long-term survival of Chinese SLE patients and analyze the death-cause situation of SLE in China.The study is a systemic review of English and non-English articles using MEDLINE, EMBASE, CNKI, WANFANG, and SINOMED databases. Additional studies were found by consultation with clinical experts, browse of references in selected papers, and search of related textbooks. Our major search terms were SLE, follow-up, prognosis, survival, mortality, and China.We included cohort studies for survival analysis, and both cohort studies and case series for death-cause analysis in China.The extraction of the articles were done by 2 authors independently using predesigned charts, including characteristics of study, clinical data, analyzing data, and study quality indicators.All pooled analyses were conducted both for random-effects model and fixed-effects model. Funnel plots and Egger regression tests were applied to check potential publication bias. Heterogeneity was tested by sensitivity analysis. We identified 5 studies for survival analysis comprising 4469 Chinese patients with SLE (380 observed deaths). Thirty-six studies were suitable for death-cause analysis with 2179 observed deaths (derived from more than 20,000 Chinese patients with SLE). The overall pooled survival rates for SLE in China were 94% for 5-year survival rate and 89% for 10-year survival rate after disease onset from the year 1995 to 2013, which were similar with previous publications in Asia-Pacific area. The proportions of different causes of death showed infection (33.2%), renal involvement (18.7%), lupus encephalopathy (13.8%), and cardiovascular disease (11.5%) as the top 4 causes.The overall survival rates for Chinese patients with SLE resembled previous publications in Asia-Pacific area. But the death causes of SLE in China were of some differences indicating relatively higher proportion of infection and lupus encephalopathy and lower cardiovascular disease. Ethnicity and more aggressive treatment might have contributed to the difference in death composition.

journal_name

Medicine (Baltimore)

journal_title

Medicine

authors

Wang Z,Wang Y,Zhu R,Tian X,Xu D,Wang Q,Wu C,Zhang S,Zhao J,Zhao Y,Li M,Zeng X

doi

10.1097/MD.0000000000000794

subject

Has Abstract

pub_date

2015-05-01 00:00:00

pages

e794

issue

eissn

0025-7974

issn

1536-5964

pii

00005792-201505010-00038

journal_volume

pub_type

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Long-term survival and death causes of systemic lupus erythematosus in China: a systemic review of observational studies.