Table 6.

Sensitivity analysis for additional outcome: number of vitreoretinal reoperations due to postoperative PVR.

Omitted study	RR	95% CI		P of chi-square	I 2	Overall effect	Selected model
None	0.71	0.34	1.45	0.05	63%	P = 0.34	random-effect model
Asaria et al. (16)	0.73	0.27	2	0.04	70%	P = 0.54	random-effect model
Zhu et al. (29)	0.96	0.63	1.48	0.17	43%*	P = 0.87	fixed-effect model
Wickham et al. (18)	0.5	0.29	0.85	0.19	39%*	P = 0.01**	fixed-effect model
Ganekal and Dorairaj (24)	0.62	0.22	1.74	0.02	75%	P = 0.37	random-effect model

^*Heterogeneity decreased after a particular study was omitted.

^**Overall effect changed when a particular study was omitted.