Table 2 The basic characteristics of studies included in the meta-analysis
Author | Year | Country | Study period | Study design | No. of patients | ||
|---|---|---|---|---|---|---|---|
Total | Early group | Late group | |||||
Bai et al. [24] | 2014 | China | Jan. 2011–Dec. 2012 | Single center, retrospective cohort study | 213 | 86 | 127 |
Permpikul et al. [29] | 2019 | Thailand | Oct. 2013–Mar. 2017 | Single center, RCT | 310 | 155 | 155 |
Elbouhy et al. [30] | 2019 | Egypt | Jan. 2017–Dec. 2018 | Single center, RCT | 101 | 57 | 44 |
Colon Hidalgo et al. [25] | 2020 | USA | Jan. 2017–Jul. 2017 | Single center, retrospective cohort study | 119 | 76 | 43 |
Ospina-Tascón et al. [26] | 2020 | Colombia | Jan. 2015–Feb. 2017 | Single center, prospective cohort study | 186 | 93 | 93 |