The link between diabetes status and pancreatic Cancer survival
To investigate the link between diabetes status and pancreatic cancer survival by: 
--looking at the direct relationship
--looking at the relationship between alcohol usage and smoking status with survival and its link to the other factors 
--looking at the relationship with other lifestyle variables, cancer grade, and surgery status. 
--looking at Vitamin D levels in association with survival due to current literature relating Vitamin D to risk and treatment 
-- assessing for mediation, interaction, and confounding 
-- build on or corroborate current literature
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