Assessment by meta-analysis of interferon-gamma for the diagnosis of tuberculous peritonitis

AIM:To investigate the performance and diagnostic accuracy of interferon-gamma(IFN-γ) for tuberculous peritonitis(TBP) by meta-analysis.METHODS:A systematic search of English language studies was performed.We searched the following electronic databases:MEDLINE,EMBASE,Web of Science,BIOSIS,LILACS and the Cochrane Library.The Standards for Reporting Diagnostic Accuracy initiative and Quality Assessment for Studies of Diagnostic Accuracy tool were used to assess the methodological quality of the studies.Sensitivity,specificity,and other measures of the accuracy of IFN-γ concentration in the diagnosis of peritoneal effusion were pooled using random-effects models.Receiver operating characteristic(ROC) curves were applied to summarize overall test performance.Two reviewers independently judged study eligibility while screening the citations.RESULTS:Six studies met the inclusion criteria.The average inter-rater agreement between the two reviewers for items in the quality checklist was 0.92.Analysis of IFN-γ level for TBP diagnosis yielded a summary estimate:sensitivity,0.93(95%CI,0.87-0.97);specificity,0.99(95%CI,0.97-1.00);positive likelihood ratio(PLR),41.49(95%CI,18.80-91.55);negative likelihood ratio(NLR),0.11(95%CI,0.06-0.19);and diagnostic odds ratio(DOR),678.02(95%CI,209.91-2190.09).χ 2 values of the sensitivity,specificity,PLR,NLR and DOR were 5.66(P = 0.3407),6.37(P = 0.2715),1.38(P = 0.9265),5.46(P = 0.3621) and 1.42(P = 0.9220),respectively.The summary receiver ROC curve was positioned near the desirable upper left corner and the maximum joint sensitivity and specificity was 0.97.The area under the curve was 0.99.The evaluation of publication bias was not significant(P = 0.922).CONCLUSION:IFN-γ may be a sensitive and specific marker for the accurate diagnosis of TBP.The level of IFN-γ may contribute to the accurate differentiation of tuberculosis(TB) ascites from non-TB ascites.

Meta分析评价AMPLICOR检测系统对结核病的诊断价值

目的用Meta分析综合评价AMPLICOR检测系统对结核病的诊断价值。方法搜索Medline数据库,检索用AMPLICROR检测系统诊断结核病的文献,摘录相关数据。数据分析用Sigmaplot软件绘制SROC曲线,用Cochrane工作组的Revman4．2软件进行Meta分析,用非参数检验比较不同金标准和不同标本类型对结果的影响。结果共获得到文献42篇,AMPLICOR检测系统诊断结核病敏感性81．2％,特异性96．0％,22篇文献分别分析了AMPLICOR检测系统对涂片阳性和阴性结果的差异,对涂片阳性病例敏感性97．0％,特异性76．6％,涂片阴性病例敏感性62．2％,特异性99．3％,采用不同金标准和不同标本类型DOR(Diagnostic Odd Ratio)有显著差异。结论AMPLICROR检测系统不仅对菌阳结核病,对菌阴结核病也具有一定诊断价值。影响试验结果的因素包括金标准的类型、菌阳标本所占比例、呼吸道标本所占比例等。

Meta分析评价AMPLICOR检测系统对结核病的诊断价值

目的用Meta分析法综合评价AMPLICOR检测系统对结核病的诊断价值。方法搜索Medline数据库．检索用AMPUCROR检测系统诊断结核病的文献，摘录相关数据；数据分析用Sigmaplot软件绘制SROC曲线，用Cochrane工作组的Revman4．2软件进行Meta分析，用非参数检验比较不同金标准和不同标本类型对结果的影响。结果共获得文献42篇．Amplicor检测系统诊断结核病敏感性81．2％，特异性96．0％。22篇文献分别分析了Amplicor检测系统对涂片阳性和阴性结果的差异，对涂片阳性病例敏感性97．0％，特异性76．6％，涂片阴性病例敏感性62．2％，特异性99．3％，采用不同金标准和不同标本类型DOR（Diagnostic Odd Ratio）有显著差异。结论AMPHCOR检测系统不仅对菌阳结核病．对菌阴结核病也具有一定诊断价值。影响试验结果的因素包括金标准的类型、菌阳标本所占比例、呼吸道标本所占比例等。