Table 4. Results of the ROBIS assessments.
| Review | Phase 1 | Phase 2 | Phase 3 | |||||
|---|---|---|---|---|---|---|---|---|
| Assessing relevance (participants, interventions, comparisons, outcomes) | Domain 1. Study eligibility criteria | Domain 2. Identification and selection of studies | Domain3. Data collection and study appraisal |
Domain 4. Synthesis and findings | Risk of bias in the review | |||
| Clavijo et al. (2017) | ☺ | ☺ | ☺ | ☺ | ☹ | ☺ | ||
| Zou et al. (2017) | ☺ | ☹ | ☺ | ☺ | ☺ | ☹ | ||
| Sokolakis et al. (2019) | ☺ | ☺ | ☺ | ☺ | ☹ | ☺ | ||
| Man et al. (2018) | ☺ | ☺ | ☹ | ☺ | ? | ☺ | ||
| Lu et al. (2017) | ☺ | ☺ | ? | ☺ | ☹ | ☹ | ||
| Dong et al. (2019) | ☺ | ☺ | ☹ | ☺ | ☺ | ☹ | ||
| Mo et al. (2019) | ☺ | ☺ | ☺ | ☹ | ☹ | ☹ | ||
| Liu et al. (2018) | ☺ | ☺ | ? | ☹ | ☺ | ☹ | ||
☺, low risk; ☹, high risk; ?, unclear risk.