Table 4.

Postoperative data.

Parameters	FANS (N + R)	Conventional ureteral access sheath (N + R)	95%CI	P-value
Hospitalization time, n, day, media（IQR）	3 (2)	3 (1)	[0.341, 0.36]	0.35
Postoperative creatinine, μmoI/L, mean ± SD	88.64 ± 25.56	94.48 ± 41.67	[−0.315, 0.652]	0.495
Δ Creatinine, μmoI/L, media (IQR)	2 (11)	3（13）	[0.563, 0.582]	0.57
Complications, n, %
I、II	1 (3%)	2 (6%)	[0.48 (0.04, 5.62)]	1.0
III、IV
SFR immediately after surgery, %	88%	64%	[4.14 (1.17, 14.65)]	0.04
SFR 1 month after surgery, %	97%	85%	[5.71 (0.63, 51.89)]	0.20
Auxiliary treatment, n,%	1 (3%)	4 (12.1%)	[0.23 (0.02, 2.15)]	0.36