Glycated haemoglobin reduction and fixed ratio combinations of analogue basal insulin and glucagon-like peptide-1 receptor agonists: A systematic review

Table 3 Study bias assessment

Ref.	Selection bias: Random sequence generation	Selection bias: Allocation concealment	Performance bias: Blinding of participants	Performance bias: Blinding of personnel/care providers	Detection bias: Blinding of outcome assessor	Attrition bias: Incomplete outcome data	Reporting bias: Selective outcome reporting	Intention-to-treat-analysis	Selection bias: Group similarity at baseline	Performance bias: Co-interventions	Performance bias: Compliance	Detection bias: Timing of outcome assessments	Additional bias	Overall quality
Lingvay et al[25]	L	H	H	H	L	L	L	L	L	L	L	L	L	Moderate
Rosenstock et al[26]	L	H	H	H	L	L	L	L	L	L	L	L	L	Moderate
Rosenstock et al[28]	L	H	H	H	L	L	L	L	L	L	L	L	L	Moderate

H: High risk of bias; M: Moderate risk of bias; L: Low risk of bias.