Table IV.

Surgery data

Parameter	Laparoscopy (n = 226)	Conversion (n = 17)	Open surgery (n = 226)	Value of p
Operating time [min]	152 ±47	224 ±76	155 ±58	0.000001
No. of lymph nodes sampled	13 ±8	13 ±7	11 ±7	0.017
Positive resection margin	1 (0.4%)	0 (0.0%)	1 (0.4%)	0.963
Blood loss [ml]	177 ±293	415 ±425	305 ±434	0.00023
Hospital stay [days]	11.3 ±5.8	12.5 ±4.6	12.0 ±6.3	0.390
Morbidity	65 (28.8%)	6 (35.3%)	72 (31.9%)	0.703
Mortality	7 (3.1%)	0 (0.0%)	6 (2.7%)	0.746