Top nicardipine Related Articles. 1  amlodipine Amlodipine besylate (Norvasc) is a drug that belongs to the drug class of calcium channel blockers (CCBs), and is prescribed for the treatment and prevention of angina (heart or chest pain) that results from coronary spasm and from exertion.
By age 3 or 4 years, most children are able to cooperate for subjective visual acuity testing using an eye chart. If a child is unable to cooperate for visual acuity testing at age 3, a second attempt should be made within 6 months, if the child is age 4, a second attempt should be made within one month.
If not the t-test, then what? If the t-test is not appropriate, then one alternative is a nonparametric test, such as Wilcoxonâs test. Another alternative is a permutation test, or a bootstrap. In my opinion, all three alternatives ought to be used more often. Suppose one wishes to test if men are heavier than women in a given population.