“…For example, surgeons often ordered low value preoperative investigations because they anticipated that the anaesthesiologist wanted these results, and anaesthesiologists were reluctant to cancel these tests because they had been ordered by the surgeon. This barrier has been demonstrated in other studies 28. Further, surgeons and anaesthesiologists felt that the risks of not ordering investigations, even if rare or unlikely, (such as patient harm or surgical cancellations) were greater than the consequences of ordering these tests (such as cost or care cascades resulting in additional tests or specialty consultations), suggesting that over-testing is rooted in the general misconception that medical screening cannot be harmful.…”