 Aim 1: Minutes of time spent searching for misplaced sponges will be analyzed using ranges, means, and standard deviations. Comparison before and after implementation of the RF detection technology will be described as percentages and analyzed using chi square with Yates correction. To provide the best estimate of the resources used in searching for sponges, investigators will use published data on operating room costs per minute to estimate search costs 17.23. However, there are significant differences across institutions. To accommodate this broad range of potential adopters of this RF detection technology and show differences in potential cost-effectiveness, in addition to using the average estimate of operating room time cost from the literature, investigators will construct lower bound and upper bound estimates of the operating room time costs to provide a range of cost estimates to use in assessing the RF detection technology intervention. 