Author Question: A nurse researcher critiquing a research study notes that a confidence interval (CI) is too large ... (Read 181 times)

mia · **on:** Jul 8, 2018

A nurse researcher critiquing a research study notes that a confidence interval (CI) is too large for a new therapy to be clinically meaningful. What likely contributed to this statistical outcome?

a. Strong power level
b. Quantitative experimental design
c. Statistical analysis
d. Too small a sample

Question 2

What term is used for the ability of a test or technique to detect a disease when present?

a. Specificity
b. Confidence interval
c. Survival curve
d. Sensitivity

xiaomengxian · **Reply #1 on:** Jul 8, 2018

Answer to Question 1

ANS: D

Feedback
A Strong power level would contribute to a small CI.
B Quantitative experimental design would not hamper CI outcomes.
C Statistical analysis is the process of calculating a CI.
D As the number of subjects in a study increases, the CI narrows.

Answer to Question 2

ANS: D

Feedback
A Specificity is the measure of how well a test or technique rules out disease when it is absent.
B Confidence interval is a measure of precision of study results.
C Survival curve is a graph showing the probability of a patient's surviving in a given state for a specified time.
D Sensitivity is the measure of how well a test or technique detects disease when it is present.