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. Author manuscript; available in PMC: 2015 Sep 1.
Published in final edited form as: Ann Assoc Am Geogr. 2015 Apr 27;105(3):454–472. doi: 10.1080/00045608.2015.1018777

Table 1.

Equivalence of model states and residence times between carcinogenesis- and stage-based models, using diagnostic pancreatic cancer staging according to the American Cancer Society American Joint Committee on Cancer (Edge et al. 2010).

Stage model compartment Carcinogenesis model compartment Description American Joint Committee on Cancer (AJCC) staging Residence time
q6 q3, q4 Insitu, local, not diagnosed Insitu: AJCC Tis, N0, M0
Local: AJCC IA, IB, N0, M0		 T2 : 6.8±3.4 yrs
q7 q5 Regional, distant, not diagnosed Regional: AJCC IIA, IIB
Distant: AJCC IV		 T3 : 2.7±1.2 yrs
q8 - Diagnosed pancreatic cancer May be in situ, local, regional, or distant; in most cases pancreatic cancer is diagnosed at an advanced stage T4 : 0.5±0.25 yrs (2011 five-year survival rate < 6% and average life expectancy after diagnosis is 3 to 9 months.