Meta-Analysis of Low Temperature Plasma Radiofrequency Ablation and CO₂ Laser Surgery on Early Glottic Laryngeal Carcinoma

Table 3

Results of meta-analysis on recurrence rate.

Study or subgroup	Radio frequency group		Laser group		Weight	Odds ratio, -, fixed, 95% CI
	Events	Total	Events	Total
Semmler et al.	12	93	11	93	36.24%	0.74 [0.21, 2.06]
Liu Jianyong et al.	1	42	3	42	9.21%	0.13 [0.03, 2.87]
Jun et al.	2	47	1	46	1.67%	4.98 [0.23, 1113.13]
Jinhui and Chengyu	7	64	5	64	17.35%	1.784 [0.36, 4.56]
Yuke et al.	2	52	5	52	5.29%	0.36 [0.08, 2.08]
Yong et al.	2	48	3	47	5.12%	0.53 [0.08, 6.14]
Bin et al.	1	33	0	33	25.12%	0.754 [0.42, 1.89]
Total (95% CI)		379		377	100.00%	0.80 [0.35, 1.29]
Total events	27		28

Heterogeneity: , (); . Test for overall effect: ().