Subcutaneous fat thickness and abdominal depth are risk factors for surgical site infection after gastric cancer surgery

Table 3 Diagnostic value of subcutaneous fat thickness, abdominal depth, and the product of subcutaneous fat thickness and abdominal depth for surgical site infection

	Cutoff value	Sensitivity	Specificity	+LR	−LR	AUC
SFT	16.55	0.850	0.657	2.479	0.228	0.770 (0.700–0.839)
AD	67.85	0.800	0.578	1.895	0.346	0.715 (0.635–0.795)
SFT × AD	11.11	0.875	0.635	2.397	0.197	0.810 (0.740–0.879)

+LR: Positive likelihood ratio; −LR: Negative likelihood ratio; SFT: Subcutaneous fat thickness; AD: Abdominal depth; SFT × AD: The product of SFT and AD.