Clinicopathological features of patients undergoing surgery for pancreatic cancer with very early postoperative recurrence

Table 7 State-of-the-art comparison of very early recurrence studies in pancreatic ductal adenocarcinoma

Ref.	Sample size	VER definition	Key predictors	Statistical methods	Findings
Belfiori et al[6]	300	< 12 weeks	Body/tail tumors, G3 tumors	Logistic regression	Higher VER risk in body/tail (HR = 2.34)
Strobel et al[14]	500	< 6 months	G1 tumors (negative predictor)	Cox regression	G1 predicts long-term survival
Current study	303	< 12 weeks	G3 tumors, head tumors, RDW	Logistic regression, random forest	G3 strongest predictor (OR = 2.43), AUC 0.75 (random forest)

AUC: Area under the curve; HR: Hazard ratio; OR: Odds ratio; VER: Very early recurrence.