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Table 1 The basic characteristics of studies included in meta-analysis

From: Comparison of T-piece and pressure support ventilation as spontaneous breathing trials in critically ill patients: a systematic review and meta-analysis

AuthorYearCountryStudy periodStudy designNo. of patients
    TotalPST-piece
Ebsteban1997SpainOct. 1994–Jun. 1995Multicenter484238246
Koh2000KoreaMay 1997–Mar. 1998Single center422022
Haberthur2002SwitzerlandJul. 1997–Jul. 1998Single center603030
Matic2004CroatiaAug. 1999–Oct. 2000Single center260150110
Matic2007CroatiaApr. 2004–Apr. 2006Single center1367066
Zhang2014ChinaJan. 2007–Dec. 2007Single center20893115
Teixeira2015BrazilNov. 2012–Nov. 2013Single center1124666
Chittawatanarat2018ThailandJun. 2011–Nov. 2013Single center520260260
Santos Pellegrini2018Brazil2012–2016Multicenter1909199
Subira2019SpainJan. 2016–Apr. 2017Multicenter1153575578