Factors related to the success rate of pediatric extracorporeal shock wave lithotripsy (ESWL) in Cipto Mangunkusumo Hospital: an 8-year single-center experience

African Journal of Urology

Table 5 Statistical analysis results between numerical variables, immediate success, and 3-month stone-free status

Factors	Immediate stone-free rate (n = 32), mean ± SD (median)	Not success (n = 7), mean ± SD (median)	p value	3-month stone-free rate (n = 26), mean ± SD (median)	Not stone-free (n = 11), mean ± SD (Median)	p value
Age (years old)^a	14.3 ± 4.5 (16)	15.6 ± 1.4 (15)	0.657	14.3 ± 4.5 (16.0)	12.4 ± 4.0 (14)	0.089
Weight (kg)^b	47.1 ± 11.7 (50)	45.1 ± 7.4 (44)	0.921	47.2 ± 11.7 (50)	39.8 ± 14.6 (41)	0.095
Height (cm)^a	147.1 ± 17.6 (152)	152.1 ± 7.7 (154)	0.956	149.9 ± 17.3 (155)	144.2 ± 13.8 (150)	0.107
BMI (kg/m²)^a	20.0 ± 3.6 (20)	20.0 ± 1.6 (20.2)	0.913	20.6 ± 2.6 (20.3)	39.7 ± 14.6 (41)	0.2
Stone length (mm)^a	8.9 ± 3.8 (8)	21.1 ± 6.3 (21)	< 0.001	8.3 ± 3.3 (7.5)	16.9 ± 7.2 (17)	< 0.001
Stone perpendicular length (mm)^a	7.0 ± 3.1 (6)	14.7 ± 4.7 (15)	< 0.001	11.5 ± 5.2 (10)	14.9 ± 4.7 (15)	< 0.001
Stone burden (mm²)^a	69.9 ± 61.1 (49)	329.9 ± 162.5 (405)	< 0.001	63.7 ± 60.3 (48.5)	222.3 ± 171.6 (180)	0.001
ESWL power (mJ/mm²)^a	1.29 ± 0.2 (1.31)	1.4 ± 0.1 (1.43)	0.192	1.3 ± 0.2 (1.35)	1.33 ± 0.2 (1.43)	0.682
ESWL shock^a	4256.6 ± 1091.6 (4000)	4357.1 ± 944.9 (4000)	0.76	4373.1 ± 1116.6 (4350)	40,076.9 ± 932.0 (4000)	0.177