Table 4.

Results of the ROBIS assessments

Author, year (country)	Phase 1		Phase 2			Phase 3
	Assessing relevance	Domain 1: Study eligibility criteria	Domain 2: Identification and selection of studies	Domain 3: Collection and study appraisal	Domain 4: Synthesis and findings	Risk of bias in the review
Raveendhara R. 2018 (USA) [26]	√	√	√	√	×	√
James W. Daily 2016 (South Korea) [34]	√	√	×	√	×	√
An-Fang Hsiao 2021 (China) [28]	√	√	×	√	√	√
Igho J. ONAKPOYA 2017 (UK) [32]	√	√	√	√	×	×
Zhiqiang Wang 2021 (Australia) [33]	√	√	√	√	×	√
Wenli Dai 2021 (China) [29]	√	√	√	√	√	√
Jian Wu 2019 (China) [30]	√	√	√	√	×	√
Liuting Zeng 2021 (China) [31]	√	√	×	√	×	√
Weiyan Gong 2017 (China) [27]	√	√	√	×	×	×

Note:√, low risk; ×, high risk.