Table 4.
Tabular presentation for ROBIS results.
| Review | Phase 2 | Phase 3 | |||
|---|---|---|---|---|---|
| (1) Study eligibility criteria | (2) Identification and selection of studies | (3) Data collection and study appraisal | (4) Synthesis and findings | Risk of bias in the review | |
| Song et al. (2016) | ☺ | ☺ | ☹ | ☺ | ☺ |
| Li et al. (2016) | ☺ | ☹ | ☺ | ? | ☹ |
| Wang et al. (2017) | ☺ | ☹ | ☹ | ☺ | ☹ |
| Ma et al. (2017) | ☺ | ☺ | ☺ | ☹ | ☺ |
| Zhang et al. (2017) | ☺ | ☹ | ☺ | ☹ | ☹ |
| Fan et al. (2018) | ☺ | ☺ | ☺ | ☺ | ☺ |
| Lu et al. (2019) | ☹ | ☹ | ☹ | ☹ | ☹ |
| Li et al. (2019) | ☺ | ☺ | ☺ | ☹ | ☺ |
| Deng et al. (2020) | ☹ | ☺ | ☹ | ☺ | ☹ |
| Zhang et al. (2021) | ☺ | ☹ | ☹ | ☹ | ☹ |
☺, low risk; ☹, high risk; ?, unclear risk.