[Retracted] Clinical Effect of Retroperitoneal Laparoscopic Radical Nephrectomy on Renal Cell Carcinoma, the Influence of Renal Function, and the Influencing Factors of Recurrence

Table 3

Assignment for multivariate analysis of factors.

Factors	Variable	Assignment
Age	X1	<60 = 0, ≥60 = 1
Smoking history	X2	No = 0, Yes = 1
Tumor diameter	X3	<5 = 0, ≥5 = 1
TNM staging	X4	≤T2 = 0, >T2 = 1
Surgical methods	X5	RLRN = 0, ORN = 1
Postoperative immunotherapy	X6	Yes = 0, No = 1