======= Date Modified 14 Oct 2012 16:29:10 =======
Hi Sneha
The people you should really talk to first are you course tutors. Every university will have its own requirements for dissertations, so you should check what they will be expecting.
The choice of topic may depend on what interests you, and what you intend to do afterwards. For example, if you want to do a research job that is analysis based then you might choose a different dissertation than if you intend to become a public health practitioner. For MSc dissertations, students will commonly analyse a dataset, conduct a systematic review, or evaluate some kind of public health intervention (if data are available).
It is unlikely you will have the opportunity to do any data collection for your dissertation, though if you have access to a dataset of interest you may be able to propose an analysis of that. Otherwise, your tutors may be able to provide you with a dataset.
Good luck choosing your topic.:-)