[treis]

The way they run these studies is crazy to me:

>Only 3 of 22 operating stations (13.6%) had a functioning pulse oximeter prior to the intervention; accordingly, a pulse oximeter (model 7500; Nonin Medical Inc) was installed at each operating station as part of the implementation effort

The addition of essential medical equipment surely won't bias our results!

[dpe82]

One could argue the essential medical equipment was missing due to lack of checklists ensuring its existence. That said, yeah, it would have been better to do 2 separate studies then: one on adding the equipment and then one on checklists.