Table 3.

Suggested 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
Jang et al. (18)				?
Smith et al. (19)
Gu et al. (20)				?
Xie et al. (21)
Zhang et al. (22)
Schwarze et al. (30)
Jo and Lee (23)
Yang et al. (24)
Qian et al. (25)
Shen et al. (26)
Manheimer et al. (31)
Qu et al. (32)
Zheng et al. (27)
Yu (28)
Manheimer et al. (29)
El-Toukhy et al. (33)

, low risk; , high risk; ?, unclear risk.