The PICO question reads,"Is TENS effective in the management of chronic low-back pain in adults?" Which part of this question comes from the "I" in PICO?

A) Adults
B) Management
C) Pain
D) TENS

TENS

Transcutaneous Electrical Nerve Stimulation, a therapy using low-voltage electrical currents to relieve pain by stimulating nerves.

Chronic Low-Back Pain

Persistent pain located in the lower back area, lasting for more than three months, often without a specific cause identifiable.