K-WOMAC global score ( moxibustion @ + / - SD @ , UC @ + / -@ , p < @ , effect size = @ ) , NRS ( moxibustion @ + / -@ , UC @ + / -@ , p < @ , effect size = @ ) and timed-stand test ( moxibustion @ + / -@ , UC @ + / -@ , p = @ , effect size = @ ) were improved by moxibustion at @ weeks .