How does My Symptom Guide work?

MSG is based on Thomas Bayes theorem, often called “Bayes Law” or “Bayes Rule,” which shows the relationship between two conditional probabilities that are the reverse of each other. This theory of probability could be simplified by saying: The most common is the most probable.

Multiple prestigious textbooks, like Harrison’s, recommend Bayes theorem.

MSG is not a program that performs medical diagnosis; it is a tool that helps in decision-making by health professionals so they can have more and better information on this complicated and delicate diagnostic process.

MSG has several options to display results according to symptoms introduced to aid decision making of health professionals

  • Multiple Differential Diagnosis method: MSG provides information for most of the symptoms and laboratory tests. It includes clinical symptoms, laboratory tests, cytogenetic abnormalities, results of a flow cytometry, cytochemical, molecular biology, urine tests, LCR, etc. The MDD option of our software helps health professionals who can perform an efficient multiple differential diagnosis
  • Combined Multiple Differential Diagnosis method: MSG provides information to health professionals so that they can perform the combined multiple differential diagnosis choosing between one and several symptoms or tests and combining the differential analysis of different symptoms or evidence. The choice in this case is CMDD. You can see in this case the differential diagnosis (list of diseases) using symptoms with the condition “and” or condition “or” for example:
    • Fever and leucocytosis
    • Fever or leucocytosis

MSG with the condition “or”, using complex algorithms, is able to check if from all the possible diseases the patient can have several diseases at a time.

  • Patients DB: MSG has a module of patients with clinical data, completely anonymously; patients on whom Medical Xpert Systems has been conducting clinical validation in hospitals in various parts of the world. An example of the results of this Patients DB is shown in this table
  • All: Shows in one screen the main results of MDD, CMDD and Patients DB.

If you desire more information, you can consult or download our User’s Manual.