Comparison of seldinger and trocar techniques in the percutaneous treatment of hydatid cysts

Table 1 Statistical evaluation comparison of the changes in cyst volume between trocar and seldinger techniques (Mann-Whitney U test)

Method	n	Mean rank	Lower and upper- median	Mann-Whitney U	P value	Difference
Trocar	50	50.23	-165.00 and 97.00
			61
				1236.5	0.384	None
Seldinger	56	55.42	-29.00 and 100.00
			70.5