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.
Migraines are diagnosed by the typical clinical signs and symptoms. Migraines can be triggered by many factors, for example: Hormonal changes; Stress; Strong stimuli like loud noises; Certain foods; Migraine treatment usually is with over-the-counter (OTC) or prescription drugs. Prescription medications used to relieve the pain of migraine include triptans (a class of drugs), for example: sumatriptan (Imitrex, Alsuma, Imitrex STATdose System, Sumavel DosePro, Zecuity, Treximet)