Author

Number of patients systemic treatment/ No systemic treatment

Length of follow up (range)

No. lost to follow up (%)

Overall recurrence in systemic treatment group

Overall recurrence in non systemic treatment group

Mean time from surgery to recurrence (range)

Yu et al. [2]

16/0

28 months (23 - 53)

0 (0)

n = 0%, 0%

NA

NA

Xu et al. [1]

37/65

39.9 months (2 - 153)

4 (3.8)

n = 4%, 10.8%

(5.4% at 2 years)

n = 34%, 52.3%

(36.9% at 2 years)

20.9 months

(2 - 82)

Tse et al. [4]

24/20

48 months-treatment group (24 - 84)/

115.4 months-control group (32 - 192)

0 (0)

n = 1%, 4.2%

n = 6%, 30%

14.4 months

(9 - 39)

Cheng et al. [3]

12/6

(12 - 48)

0 (0)

n = 1%, 8.3%

n = 4%, 66.7%

NR

Totals

89/91

^*49.9 (2 - 192)

4 (2.2%)

n = 6%, 6.7%

n = 44%, 48.4%

(2 - 39)