Table 5.

Statistic summary of forest plot of comparison: metastatic occurrence in patients receiving LSS vs. amputation for the treatment of osteosarcoma.

Study	LSS		Amputation		Weight (%)	Odds ratio
	Events	Total	Events	Total		M–H, Fixed, 95% CI
Abudu et al.	12	27	9	13	34.8	0.36 [0.09, 1.44]
Guo et al.	1	13	4	8	23.6	0.08 [0.01, 0.98]
Mavrogenis et al.	1	23	3	19	16.2	0.24 [0.02, 2.55]
Niu et al.	3	12	6	10	25.3	0.22 [0.04, 1.37]
Total (95%) CI	17	75	22	50	100.0	0.24 [0.10, 0.60]

Heterogeneity: χ²=1.02, df=3 (P=0.80); I²=0%.

Test for overall effect: Z=3.05 (P=0.002).