表 1.

人口统计学和结石数据

Patients' demographics and stone criteria

Variable	Group A (n=45)	Group B (n=45)	P
Group A, in situ lithotripsy technique; Group B, active migration technique.
Age/years, x±s	51.6±14.1	51.8±13.7	0.975
Gender, n(%)			0.865
Male	34 (75.6)	30 (66.7)
Female	11 (24.4)	15 (33.3)
Stone criteria, x±s
Size/cm	1.48±0.24	1.52±0.22	0.489
Density/Hu	897.8±175.9	964.6±214.2	0.092
Laterality, n(%)			0.714
Left	26 (57.8)	22 (48.9)
Right	19 (42.2)	23 (51.1)
Hydronephrosis, n(%)			0.290
No	8 (17.8)	10 (22.2)
Grade Ⅰ	20 (44.4)	23 (51.1)
Grade Ⅱ	11 (24.4)	8 (17.8)
Grade Ⅲ	6 (13.3)	4 (8.9)