Calling adjectives medical professionals/ scientists/ epidemiologists!?

I am trying to find a topic for a very big, prominent science project. It deals with epidemiology and "using epidemiological methods of analysis to investigate a strength problem in a population."
I would like a topic that focuses on the differences between America and India (because most of my research will be there) and teen girls or 4-10 yr old kids. Please receive sure the IV and DV can be measured. Examples include
-effect of spring and fall time changes on the increase in number of accident
- effect of calcium intake on risk of osteoporosis.
-The Prevalence of Migraines in Teenagers and Efficacy of Treatment

Thank you all so much!
Answers:
I hope that will help
http://careers.stateuniversity.com/pages…

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