Hi any one can . help me how to write a proposal for an epidemiologic study of chronic migraine headaches,
1,describe the backround for such a study
2,define an aim
3,propose a feasible design
4,define the applied methods

Nobody will or should be helping you write out an entire proposal from scratch. If you can break down a few specific pointers you need you might get a better response.

I agree with pm133. Nobody can write whole proposal here as it will be a long process. We can give some important points to add in it. I am writing primary outcomes of study of chronic migraine headaches.

Primary Outcome Measures:

1. Percentage of Participants With Episodic Migraine (EM) or Chronic Migraine (CM) [TimeFrame:Baseline]
EM is defined as <15 headache days/month and CM is defined as ≥15 headache days/month.

2. Migraine Disability Assessment (MIDAS) [TimeFrame:12 Months]
The Midas score is a patient completed 5-item questionnaire about lost time and productivity (for work, school or family/social activities) in the past 3 months (number of days missed) where: 0-5=Little or No disability, 6-10=Mild disability, 11-20=Moderate disability or 21+ Severe disability. The Midas scores assessed at Months 3, 6, 9 and 12 were averaged.