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.
Topics | Pain | Headache | Migraine Headaches | Migraine Headache Prevention | What medication is most effective for preventing migraines? This is not really answerable as different medications are effective in different people. The most commonly used ones are amitriptyline, propranolol, topiramate, and divalproex. Others are occasionally effective, but that list is very long.