Table 3.

Sensitivity analysis for main outcome: primary success at 6 months.

Omitted study	RR	95% CI		P of chi-square	I 2	Overall effect	Selected model
None	1	0.95	1.07	0.09	50%	P = 0.89	Fixed-effect model
None	1.04	0.93	1.15	0.09	50%	P = 0.51	Random-effect model
Asaria et al. (16)	1.02	0.9	1.16	0.08	55%	P = 0.72	Random-effect model
Charteris et al. (17)	1.03	0.92	1.16	0.05	61%	P = 0.59	Random-effect model
Zhu et al. (29)	0.98	0.92	1.05	0.36	7%*	P = 0.63	Fixed-effect model
Garcia et al. (25)	1.05	0.93	1.18	0.05	62%	P = 0.42	Random-effect model
Wickham et al. (18)	1.09	0.98	1.21	0.68	0%*	P = 0.11	Fixed-effect model

^*Heterogeneity decreased after a particular study was omitted.