7. A method comprising: obtaining physiologic information about a patient; mapping the physiologic information to a first set of fuzzy logic membership functions; deriving a symptom status from the mapping of the physiologic information to the first set of fuzzy logic membership functions using a first fuzzy logic inference; mapping the symptom status to a second set of fuzzy logic membership functions; and deriving a disease status from the mapping of the symptom status to the second set of fuzzy logic membership functions using a second fuzzy logic inference.
7. A method comprising: obtaining physiologic information about a patient; mapping the physiologic information to a first set of fuzzy logic membership functions; deriving a symptom status from the mapping of the physiologic information to the first set of fuzzy logic membership functions using a first fuzzy logic inference; mapping the symptom status to a second set of fuzzy logic membership functions; and deriving a disease status from the mapping of the symptom status to the second set of fuzzy logic membership functions using a second fuzzy logic inference. 20. The method of claim 7 , wherein at least one of the first or second fuzzy logic inferences uses at least one rule based on information obtained from historical patient data.