There are various sampling methods. The one chosen will depend on a number of factors (such as time, money etc.). 1. Random Sampling Everyone in the entire target population has an equal chance of being selected. This is similar to the national lottery.
Various types of medications have been evaluated for migraine prophylaxis, including beta blockers, antidepressants, anticonvulsants, nonsteroidal anti-inflammatory drugs (NSAIDs), angiotensin blockade agents, and calcium channel blockers.
Steroids for migraines. Steroid medications can be very effective for migraine headaches that fail to respond to other medications. Steroids, such as prednisone, dexamethasone, methylprednisolone have many potential serious side effects if taken for a long time.