TABLE 2.

Comparison of evaluation index between groups

Index	Control n = 60		Intervention n = 62		Statistics		P value
	Mean, n, or median	SD, %, or IQR	Mean, n, or median	SD, %, or IQR	Test	Value
Procedure time, s, mean (SD)	388.27	88.97	211.44	68.58	t	12.27	< .001
First attempt success rate, n (%)
Success	46	76.67	57	91.94	χ2	5.41	.02
Failure	14	23.33	5	8.06
Patients’ satisfaction degree, score, median (IQR)	6	4-7	7.5	6-9	z	−3.31	< .001

IQR, interquartile range.