TableĀ 2b The number of observed safe (green), partially unsafe (yellow) and unsafe (red) preoperative arrangements regarding use of VKA in the post- intervention group. An arrangement with dual responsibility was considered safe; when a surgeon proposed to continu the VKA (because of low bleeding risk) this was considered safe. If only one of the two specialists made a plan, or plans were different from eachother, this was considered partially unsafe.