Table 3. TNM staging.

Staging	No of studies	Robotic	Laparoscopic	Odds ratio	95%CI	P-value
T1	4	14/264	20/267	0.57	(0.29,1.12)	0.10
T2	5	92/286	105/288	0.85	(0.60,1.20)	0.35
T3	5	152/286	145/288	1.14	(0.82, 1.58)	0.45
T4	4	13/275	8/277	1.36	(0.55,3.35)	0.51
N0	5	180/286	188/288	0.89	(0.63,1.24)	0.49
N1	5	61/286	63/288	1.00	(0.67,1.49)	1
N2	5	38/286	32/286	1.15	(0.70,1.90)	0.58
M0	2	71/79	80/83	0.34	(0.09,1.34)	0.12
M1	2	8/79	3/83	2.94	(0.75,11.57)	0.12