A Group of Researchers Developing an Instrument Performed a Test-Retest

question 17

Multiple Choice

A group of researchers developing an instrument performed a test-retest on the instrument with an interval of 5 days. This testing resulted in a correlation coefficient of 0.38. The nurse researcher interprets this as being indicative of what?

• A) Instrument is stable; high reliability
• B) Instrument is stable; low reliability
• C) Instrument is unstable; high reliability
• D) Instrument is unstable; low reliability

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Definitions:

ADH

Antidiuretic Hormone (ADH), also known as vasopressin, is a hormone that helps regulate water balance in the body by controlling the amount of water reabsorbed by the kidneys.

Diabetes Insipidus

Chronic excretion of large amounts of urine of low specific gravity accompanied by extreme thirst; results from inadequate output of antidiuretic hormone.

ADH

Antidiuretic hormone, a peptide hormone produced by the pituitary gland that regulates water absorption in the kidneys.

Insulin

Protein hormone secreted from the pancreas that increases the uptake of glucose and amino acids by most tissues.