A Nurse Finds a Cohort Study Comparing One Group Taking

question 1

Multiple Choice

A nurse finds a cohort study comparing one group taking hormone treatment with another group not taking hormone treatment to determine the incidence of changes in bone density of the lower spine.What can the nurse imply from this study?

• A) Low level of strength makes the study limited in value.
• B) Moderate level of strength makes the study probably useful.
• C) Opinions of the individuals in the cohort are not research.
• D) This could be the basis for a Quality Improvement project.

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Definitions:

Sample Variance

Sample variance is a measure of the dispersion or variability of a sample dataset, calculating how much the numbers differ from the sample mean.

Consistent

A statistical property indicating that as the size of the sample increases, the estimator converges in probability to the parameter being estimated.

Unbiased Estimators

Statistical estimators that, on average, accurately predict the value of a population parameter without systematic error.

Smallest Variance

The smallest degree of spread or dispersion of observations around the mean in a dataset, indicating less variability.