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. 2012 Apr 18;2012(4):CD007101. doi: 10.1002/14651858.CD007101.pub2

Zhang 2007.

Methods Randomised controlled trial
Participants Patients with paroxysmal AF were included. 63 patients were randomised. 30 patients were assigned to CPVA plus PVI group, and 33 to CPVA alone group.
Age: 64+/‐10 years in CPVA plus PVI group, and 62+/‐14 years in CPVA alone group.
% of male: 19/30 (63%) in CPVA plus PVI group, and 20/30 (67%) in CPVA alone group.
Follow‐up: 11+/‐3 months.
Location: Shanghai, China.
Interventions CPVA plus PVI compared with CPVA alone.
Outcomes Sinus rhythm restored, recurrence of AF
Notes  
Risk of bias
Bias Authors' judgement Support for judgement
Random sequence generation (selection bias) Unclear risk Insufficient detail was provided.
Allocation concealment (selection bias) Unclear risk B‐Unclear. The authors did not depict allocation concealment method.
Blinding High risk Blinding was not reported.
Incomplete outcome data addressed High risk There were no patients withdrawn or lost to follow up.
Adequate sequence generation Unclear risk It was not addressed.