Table 1 Characteristics of included studies
Author | Year | Region | Funding | Level of evidence | No of patients | Mean age (yr) | SEX | Mean follow-up (mo) | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
Open | Art. | Open | Art. | Male | Female | ||||||
Fu et al. | 2011 | China | NSFC | 3 | 50 | 52 | 8.9(6~19) | 9.2(5-20) | 44 | 58 | 26(12~24) |
Dai et al. | 2017 | China | NSFC and NSFH | 3 | 44 | 48 | 20.6(17~35) | 20.8(18~28) | 34 | 86 | 24 |
Rai et al. | 2017 | China | NSFC | 3 | 71 | 75 | 25.30(17~42) | 25.05(16~46) | 58 | 88 | 22 |
Zhang et al. | 2018 | China | No | 3 | 72 | 41 | 22.39±3.80 | 23.05±4.67 | 57 | 56 | 26.76(open), 25.2(Art.) |