1. Case Studies in Medicine Statistics 1

2. Question ii Does there appear to be a relationship between change in triglyceride level and change in mass? 2

3. What are triglycerides? When you eat, your body uses carbohydrate calories for immediate energy Leftover calories are turned into triglycerides and stored in fat cells for later use 3

4. Blood test Blood is typically drawn from a vein The most important use of this test is to help estimate your LDL cholesterol 4Source: http://www.nlm.nih.gov/medlineplus/ency/article/003493.htm [14 July 2011]

5. Results The American Heart Association has set guidelines for triglyceride levels: 5 Level mg/dLInterpretation <150Normal range, low risk 150 - 199Borderline high 200 - 499High >500Very high, high risk Source: http://en.wikipedia.org/wiki/Triglyceride [14 July 2011]

6. Question iii Is it possible to obtain a simple formula for predicting change in triglyceride level from change in mass? 6