# Health Statistics

Your analytical report should answer all of the following questions or tasks. Remember that both descriptive and inferential statistical methods should be included.

1. Describe the demographic and lifestyle characteristics of the people included in the sample. Describe the type and frequency of fractures experienced by the participants.
2. Describe and test the relationship between having had any fracture and a) sex, b) race/ethnicity, and c) having taken prednisone or cortisone daily for a month or longer.
3. Describe and test the relationship between femoral neck bone mineral density (BMD) and a) mother ever having had a hip fracture, and b) race/ethnicity.
4. Describe and test the association between femoral neck BMD and a) age and b) body mass index (BMI).
5. Using a multivariable model determine whether age, sex, BMI or having taken prednisone or cortisone daily for a month or longer explain variation in femoral neck BMD. Is sex an effect modifier for the relationship between femoral neck BMD and n BMI? Report and interpret the minimum model.
6. On average, is there a difference in the femoral neck BMD and the L4 BMD?
7. Develop and report the minimum model to predict the femoral neck BMD using BMD data collected from other locations in the body. Use your model to predict the femoral neck BMD for an individual with the following BMD values:

• Trochanter BMD = 0.70 g/cm2
• Intertrochanter BMD = 1.05 g/cm2
• Ward’s triangle BMD = 0.62 g/cm2
• L1 BMD = 0.85 g/cm2
• L2 BMD = 0.96 g/cm2
• L3 BMD = 0.98 g/cm2
• L4 BMD = 0.97 g/cm