Table 1.

Reduction of the number of surgical instruments on the laminectomy tray (LT) and basic neurosurgery tray (BNT) using the clinician review approach, the mathematical Newsvendor model, and the hybrid cost-based point of inflection model.

	Laminectomy tray	Basic neurosurgery tray
	N° instruments (% Size reduction)	N° instruments (% Size reduction)
Preoptimization	53	91
Clinician Review	37 (30.19%)	81 (10.99%)
Newsvendor Model	42 (20.75%)	78 (14.29%)
Hybrid Model	36 (32.08%)	85 (6.59%)
Average% Size Reduction (± Standard Deviation)	27.67 (± 6.068)	10.62 (± 3.86)