In a study testing TENS devices for pain, people used the real device and the fake (sham) device for almost exactly the same amount of time—about 2.9 hours daily—so the researchers could rule out that different usage levels explained why both groups had similar pain relief.
Evidence from Studies
Supporting (1)
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A transcutaneous electrical nerve stimulation device for the relief of neuropathic pain in NMOSD: A randomized, double-blind, sham-controlled trial
The study tested real TENS devices versus fake (sham) TENS devices and found both groups had similar pain improvements with no difference between them. The claim says this is because people used both types of devices for about the same amount of time, so unequal adherence wasn't the reason the treatments worked equally well. This matches what the study found.
Contradicting (0)
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