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. 2014 Oct 1;2014(10):CD011324. doi: 10.1002/14651858.CD011324

18. Dewan 2011: Interferential current (intervention) versus TENS (control).

OUTCOME INTERVENTION CONTROL EFFECT ESTIMATE
Mean SD n Mean SD n Mean difference (95% CI)
Overall pain (VAS 0‐10) at 4 weeks 2.15 0.75 ? 5.1 0.85 ? Not estimable (sample size unknown)
Range of flexion (degrees) at 4 weeks (unclear if active or passive) 148.5 12.99 ? 99 18.04 ? Not estimable (sample size unknown)
Range of abduction (degrees) at 4 weeks (unclear if active or passive) 154 14.29 ? 104 16.35 ? Not estimable (sample size unknown)
Range of external rotation (degrees) at 4 weeks (unclear if active or passive) 65.5 8.09 ? 34 12.42 ? Not estimable (sample size unknown)