Table 1.
The basic characteristics of studies included in meta-analysis
| Author | Year | Country | Study period | Study design | No. of patients | ||
|---|---|---|---|---|---|---|---|
| Total | PS | T-piece | |||||
| Ebsteban | 1997 | Spain | Oct. 1994–Jun. 1995 | Multicenter | 484 | 238 | 246 |
| Koh | 2000 | Korea | May 1997–Mar. 1998 | Single center | 42 | 20 | 22 |
| Haberthur | 2002 | Switzerland | Jul. 1997–Jul. 1998 | Single center | 60 | 30 | 30 |
| Matic | 2004 | Croatia | Aug. 1999–Oct. 2000 | Single center | 260 | 150 | 110 |
| Matic | 2007 | Croatia | Apr. 2004–Apr. 2006 | Single center | 136 | 70 | 66 |
| Zhang | 2014 | China | Jan. 2007–Dec. 2007 | Single center | 208 | 93 | 115 |
| Teixeira | 2015 | Brazil | Nov. 2012–Nov. 2013 | Single center | 112 | 46 | 66 |
| Chittawatanarat | 2018 | Thailand | Jun. 2011–Nov. 2013 | Single center | 520 | 260 | 260 |
| Santos Pellegrini | 2018 | Brazil | 2012–2016 | Multicenter | 190 | 91 | 99 |
| Subira | 2019 | Spain | Jan. 2016–Apr. 2017 | Multicenter | 1153 | 575 | 578 |