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Table 1 A table showing the methodological score, numbers, duration of treatment, outcomes measures and standardised mean difference for pain and function

From: Pulsed electromagnetic energy treatment offers no clinical benefit in reducing the pain of knee osteoarthritis: a systematic review

Author Quality Score[10] (0–5) Number receiving PEMF Number receiving placebo Duration of Treatment (weeks) Pain Outcome Functional Outcome Standardised Mean Difference for pain (95%CI) Standardised Mean Difference for function (95%CI)
Klaber-Moffett et al 1996[16] 5 26 22 3 VAS Pain Scale None reported -0.03 (-0.59 to 0.54) None reported
Pipetone et al 2001[14] 5 34 35 6 WOMAC Pain Scale WOMAC Physical Function Scale -0.10 (-0.58 to 0.37) -0.33 (-0.80 to 0.15)
Thamsborg et al 2005[15] 3 42 41 6 WOMAC Pain scale WOMAC Physical Function Scale -0.31 (-0.74 to 0.12) -0.58 (-1.02 to -0.14)
Laufer et al 2005[17] 3 27 31 3 WOMAC Pain scale WOMAC Physical Function Scale -0.05 (-0.57 to 0.46) -0.09 (-0.60 to 0.43)
Callaghan et al 2005[18] 4 9 9 2 VAS Pain Scale AIMS -0.33 (-1.26 to 0.61) 0.00 (-0.92 to 0.92)
TOTAL   138 138     -0.16 (-0.39 to 0.08) -0.33 (-0.59 to -0.07)
  1. VAS – Visual analogue scale,
  2. WOMAC – Western Ontario and McMaster's Universities OA index
  3. AIMS – Arthritis Impact Measurement Scale