Table 2.

Patient and stone demographics

Study	Patients, n	M:F	Mean age, years (SD/range)	Mean cumulative stone diameter, mm (SD/range)
Hollenbeck, 2003 [11]	23	ND	52 (±14.9)	16.1 (±11.7)
Darabi, 2005 [12]	19	10:13	ND (4–78)	ND
El-Hefnawy, 2011 [13]	89	68:21	49 (13–74)	ND
Mushtaque, 2012 [14]	60	38:22	ND (11–60)	ND (5–20)
Gunlusoy, 2012 [15]	55	37:18	46.1 (22–81)	10.7 (±4.2, 5–21)
Huang, 2012 [16]	25	13:12	49.8 (28–69)	24 (±5, 17–37)
Isen, 2012 [17]	41	17:24	41.2 (28–76)	8.8 (7–16)
Atis, 2013 [18]	42	28:14	39.2 (±14.2)	24.09 (±6.37)
Alkan, 2014 [19]	42	28:14	40.1 (±10.8)	30.0 (±15.4, 10–85)
Drake, 2015 [20]	21	8:13	46 (22–76)	21 (4–63)
Bansal, 2016 [21]	74	50:24	39.2 (±15.2)	11.7 (±2.4)

SD standard deviation, ND not documented