| Study (year) | Study design | Inclusion criteria | Acupoints | Overall bias |
| Wang et al. (2008) | RCT | DGP | ST36, LI4 | High | Ge et al. (2010) | RCT | DGP | CV12, ST36, PC6 | High | Shen et al. (2010) | RCT | DGP | PC6, CV12, CV6, ST36, SP6 | High | Wang et al. (2010) | RCT | DGP | BL20, BL21, BL18, BL23, PC6, ST36, SP6, CV12 | High | Zeng and Chai (2008) | RCT | DGP | BL21, CV12, BL20, LR13, BL23, BL18, LR14, GB25, ST25, ST36 | High | Zhang et al. (2007) | RCT | DGP | CV12, ST36, PC6 | High | Zheng and Ge (2010) | RCT | DGP | CV12, ST36, PC6 | High | Han et al. (2001) | RCT | DGP | ST36, ST25, PC6, ST39, CV12 | High | Li (2006) | RCT | DGP | ST36, CV12, ST25, BL21, BL20, LR3, BL23, PC6 | High | Wang (2007) | RCT | DGP | BL21, CV12, BL20, LR13, BL23, BL18, LR14, GB25, ST25, ST36 | High | Wang et al. (2009) | RCT | DGP | CV17, CV13, CV12, CV4, CV10, CV8, CV6 | High | Chen (2008) | RCT | DGP | CV12, ST36, ST25, ST21, ST37 | High | Zhao (2011) | RCT | DGP | ST36, CV12, ST25, ST21, ST37 | High | Chen (2005) | RCT | DGP | CV12, ST21, ST25, BL21, ST36 | High | Zhang et al. (2013) | RCT | DGP | CV12, ST36, PC6 | High | Li et al. (2015) | RCT | DGP | CV12, ST36, PC6 | Low | Song et al. (2020) | RCT | DGP | CV12, ST36, PC6, SP9, SP10, SP6, SP8, LI11, LI4, ST40, LR3, SP4 | High |
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