Fig. 2From: A novel staging system and clinical predictive nomogram for more accurate staging and prognosis of malignant pancreatic intraductal papillary mucinous neoplasms: a population-based studyKaplan–Meier survival curves and pairwise comparison results according AJCC 7th (A), AJCC 8th (B) and AJCC modified (C) in primary cohort. Significance was determined by log-rank tests. *p < 0.05; **p < 0.01; +p ≥ 0.05; ++p ≥ 0.1; +++p ≥ 0.5Back to article page