A Researcher Who Wants to Establish Score Reliability in an Observational

question 121

Multiple Choice

A researcher who wants to establish score reliability in an observational study typically determines

• A) how well observer-assigned scores correlate with an external criterion.
• B) the extent of agreement among observers.
• C) how well the observation predicts other events.

---

Definitions:

Rheumatoid Factor

An autoantibody that is often present in the blood of individuals with rheumatoid arthritis and some other autoimmune diseases or infections.

Lupus

A chronic autoimmune disease where the body's immune system becomes hyperactive and attacks normal, healthy tissue, leading to inflammation and tissue damage in various parts of the body.

Tumor Marker

Substances often produced by cancer cells or by the body in response to cancer, used in the blood, urine, or tissues to help detect and manage some types of cancer.

Tumor Supresser Gene

A gene that protects a cell from one step on the path to cancer. When this gene mutates or is absent, it can lead to tumor formation.