Table 1.

Study characteristics for HoLEP vs OP.

References	Level of evidence	Country	Journal	Sample size, n	Mean (SD) age, years	Mean (SD) TRUS volume, mL
Naspro et al. [12]	2	Italy	Eur. Urol.	41 vs 39	66.26 (6.55) vs 67.27 (6.27)	113.27 (35.33) vs 124.21 (38.52)
Salonia et al. [13]	2	Italy	Urology	34 vs 29	67.4 (6.7) vs 68 (6.4)	113.8 (37.0) vs 121.0 (34.9)
Kuntz et al. [14], [15], [16]	2	Germany	J. Urol., J. Endourol., Eur. Urol.	60 vs 60	69.2 (8.4) vs 71.2 (8.3)	114.6 (21.6) vs 113.0 (19.2)