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.
Medication Summary. Pharmacologic agents used for the treatment of migraine can be classified as abortive (ie, for alleviating the acute phase) or prophylactic (ie, preventive). Abortive medications include the following: Selective serotonin receptor (5-HT1) agonists (triptans) Ergot alkaloids.