Does Preoperative Radio(chemo)therapy Increase Anastomotic Leakage in Rectal Cancer Surgery? A Meta-Analysis of Randomized Controlled Trials

Table 2

Jadad score of included trials.

Study	Random allocation	Concealed allocation	Double blinding	Withdrawals and dropouts	Jadad’s score
Cedermark et al. [18]	2	1	0	1	4
MRCRCWP et al. [19]	2	1	0	1	4
Sebag-Montefiore et al. [20]	2	1	0	1	4
Sauer et al. [21]	1	1	0	1	3
Park et al. [22]	1	2	0	1	4
Marijnen et al. [23]	2	2	0	1	5
SRCT [24]	2	1	0	1	4