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

From: 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

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