Table 1 Baseline characteristics of included studies
Authors (Year) | Language | Populations | Study design | Study period | NOS | Categories | No. samples | Mean age (Years) | Genders (Male/Female) | NIT (Yes/No) | Stages | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
CP features | Prognosis | Total | PE | NE | ||||||||||
Boone et al. (2008) [38] | English | Netherland | ROS | 1989–2006 | 7 | ✓ | ✗ | 105 | 26 | 79 | 62.0 | 56/49 | None | I-IV |
Chen et al. (2010) [39] | Chinese | China mainland | ROS | 2006–2007 | 7 | ✓ | ✗ | 62 | 33 | 29 | NI | NI | None | NI |
Chuang et al. (2015) [40] | English | Taiwan | ROS | NI | 8 | ✓ | ✓ | 75 | 39 | 36 | 57.0 | 72/3 | 54/21 | I-IV |
Hirashima et al. (2010) [41] | English | Japan | ROS | 1996–2006 | 9 | ✓ | ✓ | 143 | 71 | 72 | 63.8 | 126/17 | None | I-III |
Hou et al. (2014) [42] | English | China mainland | ROS | NI | 7 | ✓ | ✗ | 35 | 22 | 13 | 61.3 | 16/19 | None | I-IV |
Kim et al. (2013) [43] | English | Korea | ROS | 1995–2008 | 8 | ✓ | ✓ | 165 | 74 | 91 | NI | 159/6 | None | I-IV |
Li et al. (2012) [44] | English | Taiwan | ROS | 1999–2009 | 9 | ✗ | ✓ | 77 | 44 | 33 | 52.0 | 75/2 | All received | I-III |
Li et al. (2015) [45] | English | Taiwan | ROS | NI | 8 | ✓ | ✓ | 105 | 59 | 46 | 54.0 | 103/2 | None | I-IV |
Lu et al. (2015) [46] | English | China mainland | ROS | 2010–2012 | 8 | ✓ | ✓ | 148 | 94 | 54 | 59.0 | 114/34 | None | I-III |