Table 1

Definitions of operating room efficiency measures: anticipation index, proportion of requests’ time and inconveniences

Equipment requestInteraction between team members to provide or manipulate a tool/item
Non-verbal requestRequest in the form of bodily gestures, camera movement or on-screen tool guidance
AnticipationActions/tasks initiated prior to or without requesting them
Anticipation ratioNumber of anticipated requests/number of all requests
Request durationTime from the request until the response is executed to completion
InconvenienceAny hindrance or difficulty associated with completing a task
Inconvenience indexNumber of requests associated with inconveniences/number of all requests