Table 7.

Characteristics of included trials of ultrasound therapy for pain relief in patients with knee osteoarthritis

First author, publication year	Type	No of patients on active therapy (n = 74)	Method quality	Mean baseline pain (mm VAS)	Best mean difference (95% CI) of change over placebo (mm VAS)	Outcome assessment timepoints (weeks, best time point in bold)
Falconer-92	Maximal tolerable 0.1 to 2.5 W/cm2. 2–3 sessions/week, 12 sessions total	74	4	53.0	n.s.	4
Total		74	4	53.0	n.s.	4

*Mean.

† Weighted mean