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. 2014 Jul 8;349:g4198. doi: 10.1136/bmj.g4198

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© Cooper et al 2014

This is an Open Access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 3.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/licenses/by-nc/3.0/.

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graphic file with name coom015360.f1_default.jpg — Percentage of procedures performed using minimally invasive surgery (MIS) by hospital. Hospitals are ranked in increasing order from lowest to highest observed to predicted ratio of MIS utilization. Each point represents one hospital. For predicted values, error bars are 95% confidence intervals. *Case mix adjusted (predicted rate). Each diamond represents one hospital