Management of Schneiderian membrane perforations during maxillary sinus floor augmentation with lateral approach in relation to subsequent implant survival rates: a systematic review and meta-analysis

International Journal of Implant Dentistry

Table 7 Statistical analysis of the included studies reflecting the risk ratio when comparing the implant survival rate in perforated and non-perforated membranes.

Study	RR	[95% Conf. interval]		% Weight
Beck-Broichsitter et al. [47]	0.989	0.960	1.020	21.94
Ferreira et al. [16]	0.994	0.977	1.011	24.27
Froum et al. [48]	1.043	0.963	1.129	11.92
Oh E et al. [49]	0.980	0.949	1.011	21.63
Hernández-Alfaro et al. [50]	0.907	0.873	0.942	20.24
Park et al. [4]	[Excluded]
Öncü E et al. [19]	[Excluded]
D+L pooled RR	0.977	0.941	1.015	100.00

Random-effects model
Heterogeneity p = 0.000, I² = 84.8%
Heterogeneity chi-squared = 26.35 (d.f. = 4) p = 0.000
I-squared (variation in RR attributable to heterogeneity) = 84.8 estimate of between-study variance; Tau-squared = 0.0014
Test of RR= 1, z= 1.20 p = 0.229