Which of the Following Is Not a Possible Factor That

question 91

Multiple Choice

Which of the following is not a possible factor that may cause a false negative result in a stress test?

• A)Technical or observer error
• B)Monitoring too many leads on the ECG to detect changes
• C)Musculoskeletal limitations to exercise preceding cardiac abnormalities
• D)Failure to reach ischemic threshold

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Definitions:

Independent Variable

The variable in an experimental or observational study that is manipulated or categorized to observe its effect on the dependent variable.

Covariance Value

A measure indicating the extent to which two random variables change together, where a positive value implies direct correlation, and a negative value an inverse correlation.

Least Squares Regression

A statistical method used to determine the line of best fit by minimizing the sum of squares of the differences between observed values and the values predicted by the model.

Correlation Coefficient

A numerical measure that quantifies the degree of correlation or linear relationship between two variables, ranging from -1 to 1.