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Table 4 Characteristics of included trials of manual acupuncture for pain relief in patients with knee osteoarthritis

From: Short-term efficacy of physical interventions in osteoarthritic knee pain. A systematic review and meta-analysis of randomised placebo-controlled trials

First author, publication year Type No of patients on active therapy (n = 409) Method quality Treat-ment period (weeks) Mean baseline pain (mm VAS) Best mean difference (95% CI) of change over placebo (mm VAS) Outcome assessment timepoints (weeks, best time point used in bold)
Berman-04 TCM with "de Qi" 169 4 12 44.5 1.2 (-2.5 to 4.9) 4, 8
Molsberger-94 TCM with "de Qi 71 4 5 46.8 10.6 (0.1 to 21.3) 5
Takeda-94 TCM with "de Qi" 20 3 4 56.0 2.0 (-7.5 to 11.9) 4
Witt-05 TCM with "de Qi" 149 4 8 64.9 7.1 (0.2 to 14.4) 8
8 weeks   318     3.6 (0.2 to 7.1)  
Total   409 3.8*   54.7† 1.3 † (-2.7 to 4.7) 4
  1. *Mean † Weighted mean