Fig. 4From: Efficacy of acupuncture combined with active exercise training in improving pain and function of knee osteoarthritis individuals: a systematic review and meta-analysisTSA on comparison of combination group versus acupuncture in total efficiency rate. The straight black line represents the conventional statistical boundary of P = 0.05. The blue line indicates the cumulative z-score of the meta-analysis. The red line indicates the TSA boundary. The green line represents the Z-curve after the penalty statistic. RIS represents the required size of informationBack to article page