Table 1.

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

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)

VAS – Visual analogue scale,

WOMAC – Western Ontario and McMaster's Universities OA index

AIMS – Arthritis Impact Measurement Scale