Table 3.

Subgroup analyses of the overall incidence of RCC recurrence.

	Number of studies	I-square (%)	Pooled event rate with 95%CI
Published year
Before 2015
Follow-up <24 months	4	72.5	0.089 (0.044, 0.144)
24–48 months	11	85.4	0.114 (0.084, 0.148)
48–72 months	4	96.4	0.135 (0.058, 0.236)
≥72 months	2	91.1	0.166 (0.084,0.265)
2015+
Follow-up <24 months	4	0.0	0.051 (0.006, 0.123)
24–48 months	5	91.9	0.195 (0.103, 0.305)
48–72 months	8	97.2	0.138 (0.060, 0.239)
≥72 months	4	73.9	0.435 (0.306, 0.568)
Cohort size
≥40 cases
Follow-up <24 months	4	56.2	0.105 (0.069, 0.148)
24–48 months	7	72.3	0.137 (0.111, 0.166)
48–72 months	10	88.3	0.120 (0.060, 0.197)
≥72 months	2	94.4	0.293 (0.217, 0.375)
<40 cases
Follow-up <24 months	4	11.2	0.027 (0.000, 0.080)
24–48 months	9	67.3	0.133 (0.054, 0.232)
48–72 months	2	3.3	0.253 (0.148, 0.375)
≥72 months	4	73.1	0.402 (0.236, 0.579)
Resection strategy
STR
Follow-up <24 months	6	72.0	0.090 (0.057, 0.129)
24–48 months	15	83.9	0.150 (0.110, 0.193)
48–72 months	11	95.5	0.147 (0.085, 0.222)
≥72 months	3	97.4	0.293 (0.217, 0.375)
GTR
Follow-up <24 months	2	0.0	0.083 (0.007, 0.210)
24–48 months	3	46.8	0.108 (0.044, 0.189)
48–72 months	5	78.9	0.114 (0.034, 0.225)

STR, subtotal resection; GTR, gross total resection.