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A controlled trial of transcutaneous electrical nerve stimulation (TENS) and exercise for chronic low back pain
Deyo RA, Walsh NE, Martin DC, Schoenfeld LS, Ramamurthy S
The New England Journal of Medicine 1990 Jun 7;322(23):1627-1634
clinical trial
6/10 [Eligibility criteria: Yes; Random allocation: Yes; Concealed allocation: Yes; Baseline comparability: Yes; Blind subjects: No; Blind therapists: No; Blind assessors: Yes; Adequate follow-up: No; Intention-to-treat analysis: No; Between-group comparisons: Yes; Point estimates and variability: Yes. Note: Eligibility criteria item does not contribute to total score] *This score has been confirmed*

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