Table 1.

Risk of bias assessment tool.

Criteria of risk of bias assessment tool
Selection	Q1	Is there a clearly stated research objective or question?
	Q2	Are the demographic and clinical factors of patients clearly described?
	Q3	Is the sample representative of the population of interest?
Data collection	Q4	Were data collected prospectively?
	Q5	Were outcomes appropriate for the study aim?
	Q6	Were outcomes objectively assessed?
	Q7	Was the follow-up period appropriate to the study aim?
Case ascertainment	Q8	Was the dosage and type of indocyanine green specified?
	Q9	Were there sufficient information to allow detailed appraisal of the evidence?
Statistical analysis	Q10	Were adequate statistical analyses to the study design performed? (Are potential confounders adequately controlled for?)
If comparative study	Q11	Was there an adequate clearly defined control group?
	Q12	Were both comparative cohorts equivalent?