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. Author manuscript; available in PMC: 2017 Oct 1.
Published in final edited form as: J Neurosurg Pediatr. 2017 Feb 10;19(4):407–420. doi: 10.3171/2016.11.PEDS16454

Fig. 1.

Fig. 1

Cohort selection from the 2012–2014 NSQIP-P data set. Trauma cases (e.g., hematoma evacuations) are excluded automatically from all NSQIP-P data capture. *Epilepsy procedures were not included in the 2012–2013 data set. †“Other” procedures are primarily baclofen pump placement or replacement (> 80%).