Table 5 Review of the literature on the relationship between stone characteristics and shock-wave lithotripsy outcomes.

Reference	Year	Country	Size	Stone location	MSD (HU)	SSD (mm)	Predictors of success treatment
Reference	Year	Country	Size	Stone location	MSD (HU)	SSD (mm)	MSD	SSD
Pareek et al.²⁷	2005	USA	64	Lower calyx	660/950^b	81.2/115.3^b	No	Yes
Gupta et al.²	2005	India	112	Renal and proximal ureter	–	–	Yes	–
Yoshida et al.³	2006	Japan	62	Renal and proximal ureter	562/742^a	–	Yes	–
Perks et al.⁴	2007	Canada	76	Renal and ureter	684/1034^a	–	Yes	–
El-Nahas et al.⁵	2007	Egypt	120	Renal	709/776^a	91/117^a	Yes	No
Weld et al.⁶	2007	USA	200	Renal	662/728^a	106/106^a	Yes	No
Perks et al.⁷	2008	Canada	111	Renal	801/1092^a	100/111^a	Yes	Yes
Kacker et al.⁸	2008	USA	325	Renal and ureter	522/724	–	Yes	–
Jacobs et al.³⁰	2008	USA	85	Renal and ureter	692.9/812.4^c	103.9/101.0^c	–	No
Bandi et al.⁹	2008	USA	94	Renal and ureter	475/544^d	108.5/102.9^d	Yes	No
Ng et al.¹⁰	2009	Hong Kong	94	Proximal ureter	534/626^a	102.3/104.4^a	Yes	Yes
Patel et al.²⁸	2009	USA	83	Renal	787.7/803.2^e	83.3/107.7^e	No	Yes
Wiesenthal et al.¹¹	2010	Canada	422	Renal and ureter	767.2	113.6	Yes	Yes
Choi et al.¹²	2012	Korea	153	Ureter	756.5/833.8^f	103.2/101.0^f	Yes	No
Tanaka et al.¹³	2013	Japan	75	Renal and ureter	670.3	104	Yes	No
Present	2014	Korea	604	Ureter	710.3	110	Yes	No

^aSuccess group vs. failure group.
^bStone-free vs. residual stone (p < 0.05 in both MSD and SSD).
^cStone-free vs. residual stone (p > 0.05 in both MSD and SSD). SSD was measured from the center of the stone to the level of the skin at 30°.
^dStone-free vs. residual stone (p > 0.05 in both MSD and SSD).
^eStone-free vs. residual stone (p > 0.05 in MSD and p < 0.05 in SSD).
^fStone size ≤10 mm vs. >10 mm.

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