Chen 2013.

Methods	Study design : randomised study
Participants	Country : Taiwan Setting : hospital Number of centres : 1 Numbers : Boomerang 30, PerClose 30 Age (mean (SD)) : Boomerang 63.1 (9.9) years, PerClose mean 69.8 (10.6) years Sex : QuickSeal 21 M/9 F, manual compression 20 M/10 F Inclusion criteria : patients undergoing percutaneous interventional procedure via the common femoral artery Exclusion criteria : patients with “double wall” arterial punctures, intraluminal thrombi, pseudoaneurysms, haematomas, arteriovenous (AV) fistulas or infection in the target artery lesion; history of protamine allergy; previous injections of neutral protamine hagedorn (NPH). We also excluded patients who required a long sheath (> 23 cm)
Interventions	Intervention 1 : Boomerang Intervention 2 : PerClose Sheath size : 7 Fr
Outcomes	Primary : procedure success; device success; device deployment time; device dwell time; manual compression time; time to ambulation; major complications Secondary : pain score; minor complications
Notes
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	Quote: "Patients were randomised" Comment: insufficient information to permit judgement of high or low risk
Allocation concealment (selection bias)	Unclear risk	Insufficient information to permit judgement of high or low risk
Blinding of participants and personnel (performance bias) All outcomes	Low risk	No blinding, but review authors judged that outcomes and outcome measurements are not likely to be influenced by lack of blinding
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	Insufficient information to permit judgement of high or low risk
Incomplete outcome data (attrition bias) All outcomes	Low risk	No missing data
Selective reporting (reporting bias)	Low risk	Data on pre‐specified outcomes reported
Other bias	Low risk	Study appears to be free from other sources of bias