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. 2016 Jun 17;95(24):e3862. doi: 10.1097/MD.0000000000003862

Figure 4.

Figure 4

A, Forest plot of short-term subgroup analysis for the association of postoperative versus preoperative erectile function of 8 involved procedures. The association was indicated as standard mean difference (SMD) estimate with the corresponding 95% confidence interval (CI). The SMD estimate of each study is marked with a solid black square. The size of the square represents the weight that the corresponding study exerts in the meta-analysis. SMD less than 0 indicates decreased erectile function. B, Forest plot of long-term subgroup analysis for the association of postoperative versus preoperative erectile function of TURP, PKRP, and PKEP. The association was indicated as SMD estimate with the corresponding 95% CI. The SMD estimate of each study is marked with a solid black square. The size of the square represents the weight that the corresponding study exerts in the meta-analysis. SMD less than 0 indicates decreased erectile function. C, Forest plot of long-term subgroup analysis for the association of postoperative versus preoperative erectile function of HoLEP, HoLRP, PVP, Thulium laser, OP, and LSP. The association was indicated as SMD estimate with the corresponding 95% CI. The SMD estimate of each study is marked with a solid black square. The size of the square represents the weight that the corresponding study exerts in the meta-analysis. SMD less than 0 indicates decreased erectile function. HoLEP = Holmium laser enucleation of the prostate, HoLRP = Holmium laser resection of the prostate, LSP = laparoscopic simple prostatectomy, OP = open prostatectomy, PKEP = plasmakinetic enucleation of the prostate, PKRP = plasmakinetic resection of the prostate, PVP = photoselective vaporization of the prostate, TURP = transurethral resection of the prostate.