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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 One. Percent Negative Appendectomy by Imaging Modality, Stratified by Age Range.

Figure One

Asterisks indicate statistically significant comparison within each age category. No US results are reported for the elderly age group; only 29 elderly patients underwent preoperative US, which was felt too small of a number to make a comparison valid.