### The patient 457631 has been hospitalized at age 58.08 with the 5 diagnoses IV17.3, I401.9, I278.00, I786.05, I272.4, calculate what is the probability of this patient dying in the next 6 months.

**INSTRUCTIONS TO CANDIDATES**
###### ANSWER ALL QUESTIONS

**Question 1 (related to procedures)**: The patient 457631 has been hospitalized at age 58.08 with the 5 diagnoses IV17.3, I401.9, I278.00, I786.05, I272.4, calculate what is the probability of this patient dying in the next 6 months.

- Using this data file, write a procedure code that calculates the likelihood ratios associated with any diagnosis.
- Repeatedly execute the procedure for the five diagnoses of the patient and estimate the likelihood ratios associated with this patient's death.
- Predict the odds of mortality by multiplying the five likelihood ratios.

**Question 2 (related to nested queries):**

- Using this data file, write a nested query that first finds the last visit by a patient and then reports their diagnoses during the last visit.
- Write the same code without using a nested query.
- Report the difference in computational time in seconds

**Question 3:** Refer to the patient 457631 that was analyzed. This patient has been hospitalized at age 58.08 with the 5 diagnoses IV17.3, I401.9, I278.00, I786.05, I272.4.

- Using this data file, Calculate how many patients show in the data with 2, 3, 4, and 5 combinations of these diagnoses.
- Use a do-while command to go through the various combination of these diagnoses. Calculate the odds of mortality for each of these combinations of diagnoses.

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