However , no significant differences were observed in overall complications ( @ % vs @ % ; relative risk @ -LSB- @-@ @ -RSB- ; P = @ ) , length of stay ( @ -LSB- @-@ -RSB- vs @ -LSB- @-@ -RSB- ; P = @ ) , time to first flatus ( @ hours -LSB- @-@ -RSB- vs @ hours -LSB- @-@ -RSB- ; P = @ ) , wound infection ( @ vs @ ; P = @ ) , anastomotic leaks ( @ vs @ ; P = @ ) , or mortality ( @ % vs @ % ; P = @ ) .