Author	Number of included RCTs (number of participants)	Devices used	Outcomes reported (compared to surgical circumcision technique)
			Adverse events	Operative time	Postoperative time pain during first 24 hours	Postoperative appearance or satisfaction
Cao 2015	8 (3314)	SR vs standard surgical circumcision	RR 0.54, 95% CI 0.39 to 0.74; P < 0.001	MD –17.44, 95% CI –21.61 to –13.27; P < 0.001	Intraoperative pain score: MD –3.13, 95% CI 3.79 to 2.47; P < 0.001	RR 1.29, 95% CI 1.07 to 1.56; P = 0.007
Fan 2016	10 (4649) (pair‐wise and network meta‐analysis conducted)	CDD such as DCSD and Unicirc vs ISD, e.g. SR and PrePex vs surgical circumcision technique	CDD: RR 1.00, 97.5% CI 0.30 to 3.39 ISD: RR 0.77, 97.5% CI 0.47 to 1.26	CDD: SMD –4.33, 97.5% CI –6.43 to –2.23 ISD: SMD –5.72, 97.5% CI –7.11 to –4.33	CDD: SMD –1.38, 97.5% CI –2.28 to –0.48 ISD: SMD –0.95, 97.5% CI –3.09 to 1.19 (no specific time point mentioned for measuring postoperative pain)	CDD: RR 1.12, 97.5% CI 0.96 to 1.30 ISD: RR 1.17, 97.5% CI 1.02 to 1.35
Huang 2017	18 (6179) (pair‐wise and network meta‐analyses conducted)	DCSD vs SR vs surgical circumcision technique	DCSD: OR 0.37, 95% CrI 0.19 to 0.71 SR: OR 1.27, 95% CrI 0.71 to 2.31	DCSD: SMD –20.60, 95% CrI –23.38 to –17.83 SR: SMD –19.14, 95% CrI –21.86 to –16.50	DCSD: SMD –2.01, 95% CrI –4.57 to 0.60 SR: SMD –1.64, 95% CrI –3.77 to 0.54	DCSD: OR 11.42, 95% CrI 3.60 to 37.68 SR: OR 3.85, 95% CrI 1.29 to 12.79
Huo 2017	9 (1898)	DCSD vs surgical circumcision technique	DCSD: OR 0.60, 95% CI 0.41 to 0.87; P = 0.008	DCSD: SMD –21.44, 95% CI –25.08 to –17.79; P < 0.00001	DCSD: SMD –2.36, 95% CI –2.50 to –2.22; P < 0.00001	DCSD: OR 8.77, 95% CI 5.90 to 13.02; P < 0.00001
CDD: circular disposable devices; CI: confidence interval; CrI: credible interval; DCSD: disposable circumcision suture device; ISD: in situ device; MD: mean difference; OR: odds ratio; RCT: randomized controlled trial; RR: risk ratio; SMD: standardized mean difference; SR: Shang Ring.