Helicobacter-pylori bacteria and duodenal ulcers
Question 1 Recall that the guidelines for judging whether an observed association is a causal relationship are: For each of the following findings regarding Helicobacter-pylori bacteria and duodenal ulcers (DU) specify which of the above guidelines pertains. Question 2 Please match the causal relationship in the following 3 theoretical examples. (3 points; 1 point each) a) Necessary and sufficient b) Necessary but not sufficient c) […]