Jeremy Is Diagnosed with Erectile Dysfunction,and His Doctor Prescribes Tadalafil

question 4

Multiple Choice

Jeremy is diagnosed with erectile dysfunction,and his doctor prescribes tadalafil to treat his condition.How is tadalafil likely to help Jeremy?

• A) Tadalafil will increase the blood flow to the penis by acting as a vasodilator.
• B) Tadalafil will increase the blood pressure in the penis by acting as a vasoconstrictor.
• C) Tadalafil will selectively block PDE5 in the penis so that cGMP accumulates and a full erection is maintained.
• D) Tadalafil will alter psychomotor activity and increase nerve excitability so that an erection is established and maintained.

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Definitions:

Wilcoxon Signed Rank Test

A statistical hypothesis test that doesn't rely on parameter-based assumptions, designed to evaluate whether there's a difference in the population mean ranks of two related samples, matched samples, or repeated measurements on the same sample.

Wilcoxon Signed Rank Test

A statistical analysis method void of parametric requirements, designed to assess whether two associated samples, matched pairs, or recurrent measurements on an individual sample exhibit differences in their mean rank in the population.

Rank Sums

A non-parametric statistical measure used to compare the distributions of two independent samples by ranking all observations together and then summing ranks for observations belonging to each sample.

Standardized Test Statistic

A calculated value used to determine the relative distance of a data point or sample from the mean of a population, expressed in terms of the standard deviation of the population.