Effect of monetary incentives on first-case of the day starts

We read with interest the article by Kacmar et al., "Effect of monetary incentives on first-case of the day starts" [1]. The authors state that "we are the first to utilize a simple monetary incentive to motivate anesthesiology faculty to significantly increase operating room (OR) efficiency in a large academic center" [1]. We are uncertain how the authors showed "increased OR efficiency." There are two relevant types of OR efficiency. Allocative efficiency effectively refers to the inefficiency of use of OR time [2–4].

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