Define the Following Terms

question 44

Short Answer

Define the following terms
-selection bias

---

Definitions:

Cluster

A grouping of similar items, subjects, or observations in close proximity to one another, often analyzed in statistical research.

Transcutaneous Electrical Nerve Stimulation

A method of pain relief involving the use of a mild electrical current passed through the skin via electrodes.

Chronic Pain

Persistent pain that lasts longer than the usual course of acute illness or injury or for more than three to six months, often affecting an individual's well-being and daily activities.

Wilbert Fordyce

A key figure in the development of behavioral approaches to pain management and rehabilitation.