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. Author manuscript; available in PMC: 2013 Oct 1.
Published in final edited form as: Ann Surg. 2012 Oct;256(4):586–594. doi: 10.1097/SLA.0b013e31826a9602

Figure Two. Appendectomy Patients Who Received Pre-operative Imaging.

Figure Two

Hospitals are stratified by the year in which they joined SCOAP (represented by black lines that begin with the year in which that group of hospitals first submitted cases to SCOAP). The solid gray line indicates the number of patients who underwent pre-operative imaging as a percentage of all appendectomy patients from all hospitals participating in SCOAP in any particular year. Test for trend for the overall percentage of pre-operative imaging was significant (p < 0.001).