Table 2.

Results of this meta-analysis about OPG rs2073618 polymorphism and peri-implantitis

Polymorphisms	Test of association		Test of heterogeneity		I2	Publication bias
	OR (95%)	P	Model	P
CC vs GG + GC	2.22 (1.29–3.84)	0.003	Fixed effect	0.765	0	0.12
CC vs GG	2.15 (1.16–3.98)	0.014	Fixed effect	0.989	0	0.12
C vs G	1.22 (0.90, 1.67)	0.206	Fixed effect	0.291	19	0.60
GC + CC vs GG	0.92 (0.41, 2.06)	0.28	Random effecf	0.098	56.9	0.60
GC vs GG	0.56 (0.17, 1.89)	0.353	Random effecf	0.037	69.7	0.60

Odds ratio and heterogeneity of each gene model. The P value of Begg’s test was listed below the Publication bias