Food - Weapon of Conquest with food producers ordered to assist the war aims of the Nazi government. New uses for food products included fat as a component for high explosives, apples to be turned into synthetic fuel and milk made into lubricating oil. German scientists created other synthetic items include a soy substitute for meat, with the purpose of making the nation self-sufficient in food. In Italy, self-sufficiency in food is also a goal for the Fascist regime led by Benito Mussolini who attempted to re-establish Italy's former glory. His efforts to reinvigorate the nation began with a campaign to increase its population, necessitating
Time-varying covariate Time-varying covariate A time-varying covariate (also called time-dependent covariate) is a term used in statistics, particularly in survival analyses. It reflects the phenomenon that a covariate is not necessarily constant through the whole study. For instance, if one wishes to examine the link between area of residence and cancer, this would be complicated by the fact that study subjects move from one area to another. The area of residency could then be introduced in the statistical model as a time-varying covariate. In survival analysis, this would be done by splitting each study subject into several observations, one for each area