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

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Copyright © 2016 Wolters Kluwer Health, Inc. All rights reserved.

This is an open access article distributed under the Creative Commons Attribution-NoDerivatives License 4.0, which allows for redistribution, commercial and non-commercial, as long as it is passed along unchanged and in whole, with credit to the author. http://creativecommons.org/licenses/by-nd/4.0

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A, Forest plot of normal baseline IIEF-5 score for the association of postoperative versus preoperative erectile function of three 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 decreased baseline IIEF-5 score for the association of postoperative versus preoperative erectile function of TURP. 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 risk of erectile function. C, Forest plot of decreased baseline IIEF-5 score for the association of postoperative versus preoperative erectile function of PKRP and HoLRP. 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. D, Forest plot of decreased baseline IIEF-5 score for the association of postoperative versus preoperative erectile function of 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. E, Forest plot of decreased baseline IIEF-5 score for the association of postoperative versus preoperative erectile function of PKEP, HoLEP, and PVP. 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, LSP = laparoscopic simple prostatectomy, OP = open prostatectomy, PKEP = plasmakinetic enucleation of the prostate, PVP = photoselective vaporization of the prostate, TURP = transurethral resection of the prostate.